Danco O-Ring Sizes Chart

O-rings are one of the simplest yet highly designed, exact, and practical seal designs ever devised. They come in a variety of metric and inch standard sizes. The interior diameter and cross-section diameter are used to define sizes (thickness). Your entire faucet fixture can rely on these to function and stop leaking out around the fittings.

One or more O-rings are commonly present on faucets to prevent water from spilling out around the spout. Replacing worn-out O-rings is a less expensive option than replacing the faucet fixture entirely and will provide years of worry-free use of your faucet now you have a better seal.

However, even with the most useful seal designs that lubricating O rings provide, they won’t work if you don’t have the right size, they won’t work. In our guide, you can find the correct sizes on the Danco Oring size chart.

By the end, you’ll be able to make a Danco O-Ring cross reference for any O Ring you wish to replace. (Read Angle Steel Sizes Chart)

How Do I Know What Size O-ring To Buy?

You can buy kits of O Rings, yet for the homeowner, these contain too many that you’ll never use.

However, features of O Rings are pretty standard across the range of sizes you can find.

• Durable rubber construction with black finish
• It helps to eliminate leaks in many applications, such as faucet drips at the spout.
• Provides worry-free use for a positive shut off
• Sizes are specified on the lid inside
• Designed to withstand harsh chemicals
• High abrasive resistance and temperature resistance
• Will withstand heat between a temperature range of 86°F to 248°F (-30°C to 120°C)
• Includes #5, #6, #7, #8, #9, #10, #11, #12, #13, #14, #16 and #27 O-rings

How Do You Size A Rubber O-ring?

O-rings are one of the simplest yet most engineered, precise, and useful seal designs ever developed for plumbing and sealing tasks.

You will find the self-lubricating O-rings available in various metric and inch standard sizes and intended for faucet repair.

To size, you need to take a few simple steps. First, sizes are specified by the inside diameter and the cross-section diameter (thickness). (Read Socket Size Chart Metric And Standard)

Danco O-rings quickly repair your leaky faucet. Faucets usually have one or more o-rings to prevent water from leaking from around the spout.

Replacing worn-O-rings is an inexpensive alternative to replacing the entire faucet fixture to save water and energy.

What Size Is A #11 O-ring?

Standard and metric O-ring sizing exist. The US developed standard sizes, while the rest of the world uses metric. In addition, regions such as Europe and Japan have their own metric sizes.

Aerospace Standard AS568B, Aerospace Size Standard for O-rings, defines the standard sizes used by US O-ring producers.

The SAE specification includes O-ring sizes in six series or groups in both inches and millimeters. The first five series are based on diameter.

The sixth series has 20 boss seal sizes, and most military requirements use the standard sizes.

Sizes range from 0.040 to 0.275 inch. A range of 0.029 to 25.940 inch inside diameters 369 standard sizes, so more than enough sizes are available.

O-rings will repair your faucet up to something that needs a 32 in wall thickness.

O-Ring Size Chart
Size	CS – in	ID - in	OD – in	CS -mm	ID – mm	OD - mm
001	0.040	0.029	0.109	1.02	0.74	2.78
002	0.050	0.042	0.142	1.27	1.07	3.61
003	0.060	0.056	0.176	1.52	1.42	4.46
004	0.070	0.070	0.210	1.78	1.78	5.34
005	0.070	0.101	0.241	1.78	2.57	6.13
006	0.070	0.114	0.254	1.78	2.90	6.46
007	0.070	0.145	0.285	1.78	3.68	7.24
008	0.070	0.176	0.316	1.78	4.47	8.03
009	0.070	0.208	0.348	1.78	5.28	8.84
010	0.070	0.239	0.379	1.78	6.07	9.63
011	0.070	0.301	0.441	1.78	7.65	11.21
012	0.070	0.364	0.504	1.78	9.25	12.81
013	0.070	0.426	0.566	1.78	10.82	14.38
014	0.070	0.489	0.629	1.78	12.42	15.98
015	0.070	0.551	0.691	1.78	14.00	17.56
016	0.070	0.614	0.754	1.78	15.60	19.16
017	0.070	0.676	0.816	1.78	17.17	20.73
018	0.070	0.739	0.879	1.78	18.77	22.33
019	0.070	0.801	0.941	1.78	20.35	23.91
020	0.070	0.864	1.004	1.78	21.95	25.51
021	0.070	0.926	1.066	1.78	23.52	27.08
022	0.070	0.989	1.129	1.78	25.12	28.68
023	0.070	1.051	1.191	1.78	26.70	30.26
024	0.070	1.114	1.254	1.78	28.30	31.86
025	0.070	1.176	1.316	1.78	29.87	33.43
026	0.070	1.239	1.379	1.78	31.47	35.03
027	0.070	1.301	1.441	1.78	33.05	36.61
028	0.070	1.364	1.504	1.78	34.65	38.21
029	0.070	1.489	1.629	1.78	37.82	41.38
030	0.070	1.614	1.754	1.78	41.00	44.56
031	0.070	1.739	1.879	1.78	44.17	47.73
032	0.070	1.864	2.004	1.78	47.35	50.91
033	0.070	1.989	2.129	1.78	50.52	54.08
034	0.070	2.114	2.254	1.78	53.70	57.26
035	0.070	2.239	2.379	1.78	56.87	60.43
036	0.070	2.364	2.504	1.78	60.05	63.61
037	0.070	2.489	2.629	1.78	63.22	66.78
038	0.070	2.614	2.754	1.78	66.40	69.96
039	0.070	2.739	2.879	1.78	69.57	73.13
040	0.070	2.864	3.004	1.78	72.75	76.31
041	0.070	2.989	3.129	1.78	75.92	79.48
042	0.070	3.239	3.379	1.78	82.27	85.83
043	0.070	3.489	3.629	1.78	88.62	92.18
044	0.070	3.739	3.879	1.78	88.62	98.53
045	0.070	3.989	4.129	1.78	101.32	104.88
046	0.070	4.239	4.379	1.78	107.67	111.23
047	0.070	4.489	4.629	1.78	114.02	117.58
048	0.070	4.489	4.879	1.78	120.37	123.93
049	0.070	4.989	5.129	1.78	126.72	130.28
050	0.070	5.239	5.379	1.78	133.07	136.63
102	0.070	0.049	0.255	2.62	1.24	6.48
103	0.070	0.081	0.287	2.62	2.06	7.30
104	0.103	0.112	0.318	2.62	2.84	8.08
105	0.103	0.143	0.349	2.62	3.63	8.87
106	0.103	0.174	0.380	2.62	4.42	9.66
107	0.103	0.206	0.412	2.62	5.23	10.47
108	0.103	0.237	0.443	2.62	6.02	11.26
109	0.103	0.299	0.505	2.62	7.59	12.83
110	0.103	0.362	0.568	2.62	9.19	14.43
111	0.103	0.424	0.630	2.62	10.77	16.01
112	0.103	0.487	0.693	2.62	12.37	17.61
113	0.103	0.549	0.755	2.62	13.94	19.18
114	0.103	0.612	0.818	2.62	15.54	20.78
115	0.103	0.674	0.880	2.62	17.12	22.36
116	0.103	0.737	0.943	2.62	18.72	23.96
117	0.103	0.799	1.005	2.62	20.29	25.54
118	0.103	0.862	1.068	2.62	21.89	27.13
119	0.103	0.924	1.130	2.62	23.47	28.71
120	0.103	0.987	1.193	2.62	25.07	30.31
121	0.103	1.049	1.255	2.62	26.64	31.88
122	0.103	1.112	1.318	2.62	28.24	33.48
123	0.103	1.174	1.380	2.62	29.82	35.06
124	0.103	1.237	1.443	2.62	31.42	36.66
125	0.103	1.299	1.505	2.62	32.99	38.23
126	0.103	1.362	1.568	2.62	34.59	39.83
127	0.103	1.362	1.630	2.62	36.17	41.41
128	0.103	1.487	1.693	2.62	37.77	43.01
129	0.103	1.549	1.755	2.62	39.34	44.58
130	0.103	1.612	1.818	2.62	40.94	46.18
131	0.103	1.674	1.880	2.62	42.52	47.76
132	0.103	1.737	1.943	2.62	44.12	49.36
133	0.103	1.799	2.005	2.62	45.69	50.93
134	0.103	1.862	2.068	2.62	47.29	52.54
135	0.103	1.925	2.131	2.62	48.90	54.14
136	0.103	1.987	2.193	2.62	50.47	55.71
137	0.103	2.050	2.256	2.62	52.07	57.31
138	0.103	2.112	2.318	2.62	53.64	58.88
139	0.103	2.175	2.381	2.62	55.25	60.49
140	0.103	2.237	2.443	2.62	56.82	62.06
141	0.103	2.300	2.506	2.62	58.42	63.66
142	0.103	2.362	2.568	2.62	59.99	65.23
143	0.103	2.425	2.631	2.62	61.60	66.84
144	0.103	2.487	2.693	2.62	63.17	68.41
145	0.103	2.550	2.693	2.62	64.77	70.01
146	0.103	2.612	2.818	2.62	66.34	71.58
147	0.103	2.675	2.881	2.62	67.95	73.19
148	0.103	2.737	2.943	2.62	69.52	74.76
149	0.103	2.800	3.006	2.62	71.12	76.36
150	0.103	2.862	3.068	2.62	72.69	77.93
151	0.103	2.987	3.193	2.62	75.87	81.11
152	0.103	3.237	3.443	2.62	82.22	87.46
153	0.103	3.487	3.693	2.62	88.57	93.81
154	0.103	3.737	3.943	2.62	94.92	100.16
155	0.103	3.987	4.193	2.62	101.27	106.51
156	0.103	4.237	4.443	2.62	107.62	112.86
157	0.103	4.487	4.693	2.62	113.97	119.21
158	0.103	4.737	4.943	2.62	120.32	125.56
159	0.103	4.987	4.943	2.62	126.67	131.91
160	0.103	5.237	5.443	2.62	133.02	131.91
161	0.103	5.487	5.693	2.62	139.37	144.61
162	0.103	5.737	5.943	2.62	145.72	150.96
163	0.103	5.987	6.193	2.62	152.07	157.31
164	0.103	6.237	6.443	2.62	158.42	163.66
165	0.103	6.487	6.443	2.62	164.77	170.01
166	0.103	6.487	6.943	2.62	171.12	176.36
167	0.103	6.987	7.193	2.62	177.47	182.71
168	0.103	6.987	7.443	2.62	183.82	189.06
169	0.103	6.987	7.693	2.62	190.17	195.41
170	0.103	7.737	7.943	2.62	196.52	201.76
171	0.103	7.987	8.193	2.62	202.87	208.11
172	0.103	8.237	8.443	2.62	209.22	214.46
173	0.103	8.487	8.693	2.62	215.57	220.81
174	0.103	8.737	8.943	2.62	221.92	227.16
175	0.103	8.987	9.193	2.62	228.27	233.51
176	0.103	9.237	9.443	2.62	234.62	239.86
177	0.103	9.487	9.693	2.62	240.97	246.21
178	0.103	9.737	9.943	2.62	247.32	252.56
201	0.139	0.171	0.449	2.62	4.34	11.40
202	0.139	0.234	0.512	2.62	5.94	13.00
203	0.139	0.296	0.574	2.62	7.52	14.58
204	0.139	0.359	0.637	3.53	9.12	16.18
205	0.139	0.421	0.699	3.53	10.69	16.18
206	0.139	0.484	0.762	3.53	12.29	16.18
207	0.139	0.546	0.824	3.53	13.87	20.93
208	0.139	0.609	0.887	3.53	13.87	22.53
209	0.139	0.671	0.949	3.53	13.87	24.10
210	0.139	0.734	1.012	3.53	18.64	25.70
211	0.139	0.796	1.074	3.53	18.64	27.28
212	0.139	0.859	1.137	3.53	21.82	28.88
213	0.139	0.921	1.199	3.53	23.39	30.45
214	0.139	0.984	1.262	3.53	24.99	32.06
215	0.139	1.046	1.324	3.53	6.57	33.63
216	0.139	1.109	1.387	3.53	28.17	35.23
217	0.139	1.109	1.449	3.53	29.74	36.80
218	0.139	1.109	1.512	3.53	31.34	38.40
219	0.139	1.296	1.574	3.53	32.92	39.98
220	0.139	1.359	1.637	3.53	34.52	41.58
221	0.139	1.421	1.699	3.53	36.09	43.15
222	0.139	1.484	1.762	3.53	37.69	44.75
223	0.139	1.609	1.887	3.53	40.87	47.93
224	0.139	1.734	2.012	3.53	44.04	51.10
225	0.139	1.859	2.137	3.53	47.22	54.28
226	0.139	1.984	2.262	3.53	50.39	57.45
227	0.139	2.109	2.387	3.53	53.57	60.63
228	0.139	2.234	2.512	3.53	56.74	63.80
229	0.139	2.359	2.637	3.53	59.92	66.98
230	0.139	2.484	2.762	3.53	63.09	70.15
231	0.139	2.609	2.762	3.53	63.09	73.33
232	0.139	2.734	3.012	3.53	69.44	76.50
233	0.139	2.859	3.137	3.53	72.62	79.68
234	0.139	2.984	3.262	3.53	3.53	82.85
235	0.139	3.109	3.387	3.53	78.97	86.03
236	0.139	3.234	3.512	3.53	82.14	89.20
237	0.139	3.359	3.637	3.53	85.32	92.38
238	0.139	3.484	3.762	3.53	85.32	95.55
239	0.139	3.609	3.887	3.53	91.67	98.73
240	0.139	3.734	4.012	3.53	94.84	101.90
241	0.139	3.734	4.137	3.53	98.02	105.08
242	0.139	3.984	4.262	3.53	101.19	108.25
243	0.139	4.109	4.387	3.53	104.37	111.43
244	0.139	4.234	4.512	3.53	107.54	114.60
245	0.139	4.359	4.637	3.53	110.72	117.78
246	0.139	4.484	4.762	3.53	113.89	120.95
247	0.139	4.609	4.887	3.53	117.07	120.95
248	0.139	4.734	5.012	3.53	120.24	127.30
249	0.139	4.859	5.137	3.53	123.42	130.48
250	0.139	4.984	5.262	3.53	126.59	130.48
251	0.139	5.109	5.387	3.53	129.77	136.83
252	0.139	5.234	5.512	3.53	132.94	140.00
253	0.139	5.359	5.637	3.53	136.12	143.18
254	0.139	5.484	5.762	3.53	139.29	146.35
255	0.139	5.609	5.887	3.53	142.47	149.53
256	0.139	5.734	6.012	3.53	145.64	152.71
257	0.139	5.859	6.137	3.53	148.82	155.88
258	0.139	5.984	6.262	3.53	151.99	159.05
259	0.139	6.234	6.512	3.53	158.34	165.40
260	0.139	6.484	6.762	3.53	164.69	171.75
261	0.139	6.734	6.762	3.53	171.04	178.10
262	0.139	6.984	7.262	3.53	177.39	184.45
263	0.139	7.234	7.512	3.53	183.74	190.80
264	0.139	7.234	7.762	3.53	190.09	197.15
265	0.139	7.734	8.012	3.53	196.44	203.50
266	0.139	7.984	8.012	3.53	202.79	209.85
267	0.139	8.234	8.512	3.53	209.14	216.20
268	0.139	8.484	8.762	3.53	215.49	222.55
269	0.139	8.734	9.012	3.53	221.84	228.90
270	0.139	8.984	9.262	3.53	228.19	235.25
271	0.139	9.234	9.512	3.53	234.54	253.59
272	0.139	9.484	9.762	3.53	240.89	247.95
273	0.139	9.734	10.012	3.53	240.89	254.30
274	0.139	9.984	10.262	3.53	253.59	260.65
275	0.139	10.484	10.762	3.53	253.59	273.35
276	0.139	10.984	11.262	3.53	278.99	286.05
277	0.139	11.484	11.262	3.53	291.69	286.05
278	0.139	11.984	12.262	3.53	304.39	286.05
279	0.139	11.984	13.262	3.53	329.79	336.85
280	0.139	11.984	13.262	3.53	355.19	336.85
281	0.139	14.984	13.262	3.53	380.59	336.85
282	0.139	15.955	16.233	3.53	405.26	12.07
283	0.139	16.955	17.233	3.53	405.26	437.72
284	0.139	17.955	18.233	3.53	405.26	463.12
309	0.210	0.412	0.832	3.53	10.46	21.12
310	0.210	0.475	0.895	3.53	12.07	21.12
311	0.210	0.537	0.957	3.53	12.07	24.30
312	0.210	0.600	1.020	5.33	15.24	25.90
313	0.210	0.662	1.082	5.33	16.81	27.47
314	0.210	0.725	1.145	5.33	18.42	29.08
315	0.210	0.787	1.207	5.33	19.99	30.65
316	0.210	0.850	1.270	5.33	21.59	32.25
317	0.210	0.912	1.332	5.33	21.59	33.82
318	0.210	0.975	1.395	5.33	24.77	35.43
319	0.210	1.037	1.457	5.33	26.34	37.00
320	0.210	1.100	1.520	5.33	27.94	38.60
321	0.210	1.162	1.582	5.33	27.94	40.17
322	0.210	1.225	1.645	5.33	31.12	41.78
323	0.210	1.225	1.707	5.33	32.69	43.35
324	0.210	1.350	1.770	5.33	34.29	44.95
325	0.210	1.475	1.895	5.33	37.47	48.13
326	0.210	1.600	2.020	5.33	40.64	51.30
327	0.210	1.725	2.145	5.33	43.82	54.48
328	0.210	1.850	2.270	5.33	46.99	57.65
329	0.210	1.975	2.395	5.33	50.17	60.83
330	0.210	2.100	2.520	5.33	53.34	64.00
331	0.210	2.225	2.645	5.33	56.52	64.00
332	0.210	2.350	2.770	5.33	59.69	70.35
333	0.210	2.475	2.895	5.33	62.87	70.35
334	0.210	2.600	3.020	5.33	66.04	76.70
335	0.210	2.725	3.145	5.33	69.22	79.88
336	0.210	2.850	3.270	5.33	72.39	83.05
337	0.210	2.975	3.395	5.33	75.57	83.05
338	0.210	3.100	3.520	5.33	78.74	89.40
339	0.210	3.225	3.645	5.33	81.92	102.58
340	0.210	3.350	3.770	5.33	81.92	95.75
341	0.210	3.475	3.895	5.33	88.27	98.93
342	0.210	3.600	4.100	5.33	91.44	107.32
343	0.210	3.725	4.145	5.33	94.62	105.28
344	0.210	3.850	4.270	5.33	97.79	108.45
345	0.210	3.975	4.395	5.33	100.97	111.63
346	0.210	4.100	4.395	5.33	104.14	114.80
347	0.210	4.100	4.395	5.33	107.32	117.98
348	0.210	4.350	4.770	5.33	110.49	121.15
349	0.210	4.475	4.895	5.33	113.67	124.33
350	0.210	4.600	5.020	5.33	116.84	127.50
351	0.210	4.725	5.145	5.33	120.02	127.50
352	0.210	4.850	5.270	5.33	123.19	133.85
353	0.210	4.975	5.395	5.33	126.37	137.03
354	0.210	5.100	5.520	5.33	129.54	140.20
355	0.210	5.225	5.520	5.33	132.72	143.38
356	0.210	5.350	5.770	5.33	135.89	146.55
357	0.210	5.475	5.895	5.33	139.07	149.73
358	0.210	5.600	6.020	5.33	142.24	152.90
359	0.210	5.725	6.145	5.33	145.42	156.08
360	0.210	5.850	6.270	5.33	148.59	159.25
361	0.210	5.975	6.645	5.33	151.77	162.43
362	0.210	6.225	6.645	5.33	158.12	168.78
363	0.210	6.475	6.895	5.33	164.47	175.13
364	0.210	6.725	7.145	5.33	170.82	181.48
365	0.210	6.725	7.395	5.33	177.17	187.83
366	0.210	7.225	7.645	5.33	183.52	194.18
367	0.210	7.475	7.895	5.33	189.87	200.53
368	0.210	7.725	8.145	5.33	196.22	206.88
369	0.210	7.975	8.395	5.33	202.57	213.23
370	0.210	8.225	8.645	5.33	208.92	219.58
371	0.210	8.475	8.895	5.33	215.27	225.93
372	0.210	8.725	9.145	5.33	221.62	232.28
373	0.210	8.725	9.395	5.33	227.97	238.63
374	0.210	9.225	9.645	5.33	234.32	244.98
375	0.210	9.475	9.895	5.33	240.67	251.33
376	0.210	9.725	10.145	5.33	247.02	257.68
377	0.210	9.975	10.395	5.33	253.37	264.03
378	0.210	10.475	10.895	5.33	266.07	276.73
379	0.210	10.975	11.395	5.33	278.77	289.43
380	0.210	11.475	11.895	5.33	291.47	302.13
381	0.210	11.975	12.395	5.33	304.17	314.83
382	0.210	12.975	13.395	5.33	329.57	340.23
383	0.210	13.975	14.395	5.33	354.97	365.63
384	0.210	14.975	15.395	5.33	380.37	391.03
385	0.210	15.955	16.375	5.33	405.26	415.92
386	0.210	16.955	17.375	5.33	430.66	441.32
387	0.210	17.955	18.375	5.33	456.06	466.72
388	0.210	18.955	19.375	5.33	481.46	492.07
389	0.210	19.955	20.375	5.33	506.86	517.47
390	0.210	20.955	21.375	5.33	532.26	542.87
391	0.210	21.955	22.375	5.33	557.66	542.87
392	0.210	22.940	23.360	5.33	582.68	593.34
393	0.210	23.940	24.360	5.33	608.08	618.74
394	0.210	24.940	25.360	5.33	633.48	644.14
395	0.210	25.940	26.360	5.33	658.88	669.54
400	0.275	1.350	1.900	6.99	34.29	48.26
401	0.275	1.475	2.025	6.99	37.47	51.44
402	0.275	1.600	2.150	6.99	40.64	54.61
403	0.275	1.725	2.275	6.99	43.82	57.79
404	0.275	1.850	2.400	6.99	46.99	60.96
405	0.275	1.975	2.525	6.99	50.17	64.14
406	0.275	2.100	2.650	6.99	53.34	67.31
407	0.275	2.225	2.775	6.99	56.52	70.49
408	0.275	2.350	2.900	6.99	59.69	73.66
409	0.275	2.475	3.025	6.99	62.87	76.84
410	0.275	2.600	3.150	6.99	66.04	80.01
411	0.275	2.725	3.275	6.99	69.22	80.01
412	0.275	2.850	3.400	6.99	72.39	86.36
413	0.275	2.975	3.525	6.99	75.57	89.54
414	0.275	3.100	3.650	6.99	78.74	89.54
415	0.275	3.225	3.775	6.99	81.92	95.89
416	0.275	3.350	3.900	6.99	85.09	99.06
417	0.275	3.475	4.025	6.99	88.27	102.24
418	0.275	3.600	4.150	6.99	91.44	105.41
419	0.275	3.725	4.275	6.99	94.62	108.59
420	0.275	3.850	4.400	6.99	97.79	111.76
421	0.275	3.975	4.525	6.99	100.97	114.94
422	0.275	4.100	4.650	6.99	104.14	118.11
423	0.275	4.225	4.775	6.99	107.32	121.29
424	0.275	4.350	4.900	6.99	110.49	124.46
425	0.275	4.475	5.025	6.99	113.67	127.65
426	0.275	4.600	5.150	6.99	116.84	130.82
427	0.275	4.725	5.275	6.99	120.02	134.00
428	0.275	4.850	5.400	6.99	123.19	137.17
429	0.275	4.850	5.525	6.99	126.37	140.35
430	0.275	5.100	5.650	6.99	129.54	143.52
431	0.275	5.225	5.775	6.99	132.72	146.70
432	0.275	5.350	5.900	6.99	135.89	146.70
433	0.275	5.475	6.025	6.99	135.89	153.05
434	0.275	5.600	6.150	6.99	142.24	156.22
435	0.275	5.725	6.275	6.99	145.42	159.40
436	0.275	5.850	6.400	6.99	148.59	162.57
437	0.275	5.975	6.525	6.99	151.77	165.75
438	0.275	6.225	6.775	6.99	158.12	172.10
439	0.275	6.475	7.025	6.99	164.47	178.45
440	0.275	6.725	7.275	6.99	170.82	184.80
441	0.275	6.975	7.525	6.99	177.17	191.15
442	0.275	7.225	7.775	6.99	183.52	197.50
443	0.275	7.475	8.025	6.99	189.87	203.85
444	0.275	7.725	8.275	6.99	196.22	210.20
445	0.275	7.975	8.525	6.99	202.57	216.55
446	0.275	8.475	9.025	6.99	215.27	229.25
447	0.275	8.975	9.525	6.99	227.97	241.95
448	0.275	9.475	10.025	6.99	240.67	254.65
449	0.275	9.975	10.525	6.99	253.37	267.35
450	0.275	10.475	11.025	6.99	266.07	280.05
451	0.275	10.975	11.525	6.99	278.77	292.75
452	0.275	11.475	12.025	6.99	291.47	305.45
453	0.275	11.975	12.525	6.99	304.17	318.15
454	0.275	12.475	14.975	6.99	316.87	330.85
455	0.275	12.975	13.525	6.99	329.57	343.55
456	0.275	13.457	14.007	6.99	329.57	356.25
457	0.275	13.975	14.525	6.99	354.97	368.95
458	0.275	14.475	15.025	6.99	367.67	381.65
459	0.275	14.975	15.525	6.99	380.37	394.35
460	0.275	15.475	16.025	6.99	393.07	407.05
461	0.275	15.955	16.505	6.99	405.26	419.24
462	0.275	16.455	17.005	6.99	417.96	431.94
463	0.275	16.955	17.505	6.99	430.66	444.64
464	0.275	17.455	18.005	6.99	443.36	457.34
465	0.275	17.955	18.505	6.99	456.06	470.04
466	0.275	18.455	19.005	6.99	468.76	482.74
467	0.275	18.955	19.505	6.99	481.46	495.44
468	0.275	19.455	20.005	6.99	494.16	508.14
469	0.275	19.955	20.505	6.99	506.86	520.84
470	0.275	20.955	21.505	6.99	532.26	546.24
471	0.275	21.955	22.505	6.99	557.66	571.64
472	0.275	22.940	23.490	6.99	582.68	596.66
473	0.275	23.940	24.490	6.99	608.08	622.06
474	0.275	24.940	25.490	6.99	633.48	647.46
475	0.275	25.940	26.490	6.99	658.88	672.86
901	0.056	0.185	0.297	1.42	4.70	7.54
902	0.064	0.239	0.367	1.63	6.07	9.33
903	0.064	0.301	0.429	1.63	7.65	10.91
904	0.072	0.351	0.495	1.83	8.92	12.58
905	0.072	0.414	0.558	1.83	10.52	14.18
906	0.078	0.468	0.624	1.98	11.89	15.85
907	0.082	0.530	0.694	2.08	13.46	17.62
908	0.087	0.644	0.818	2.21	16.36	20.78
909	0.097	0.706	0.900	2.46	17.93	22.85
910	0.097	0.755	0.949	2.46	19.18	24.10
911	0.116	0.863	1.095	2.95	21.92	27.82
912	0.116	0.924	1.156	2.95	23.47	29.37
913	0.116	0.924	1.218	2.95	25.04	30.94
914	0.116	1.047	1.279	2.95	26.59	32.49
916	0.116	1.171	1.403	2.95	29.74	35.64
918	0.116	1.171	1.587	2.95	34.42	40.32
920	0.116	1.475	1.707	3.00	37.47	43.47
924	0.116	1.720	1.952	3.00	43.69	49.69
928	0.116	2.090	2.322	3.00	53.09	59.09
932	0.116	2.337	2.569	3.00	59.36	65.36

How Do You Define O-Ring Size?

The CS (cross-section) and ID (internal diameter) are the best ways to size an O-ring (inside diameter).

A caliper (micrometer), is the ideal tool for measuring the cross-section.
If you don’t have one, you can use various alternative sizing methods to acquire a near estimate.

The crucial thing is to ensure you don’t squash the tough, flexible rubber construction as you measure. (Learn How To Dispose Of Antifreeze)

Once you get measurements, you use the O Ring size chart or download the Danco app to get standard or custom o rings for your needs.