PU O RING

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1.Application and properties

O-rings are the most used seals in actual production and life, which can seal one-way pressure, two-way pressure or alternating pressure. They are mainly used for static sealing, and some are used for dynamic sealing (usually for pneumatic reciprocating motion). In dynamic applications, they are only recommended for better working conditions. In rotating motion, if the pressure is low and the lubrication is sufficient, they can be recommended for use.
   The service life of O-rings depends on the lubrication conditions of the system, pressure, temperature, sealing clearance, speed, medium, and surface quality of metal parts and other factors.
   A wide range of materials, all kinds of rubber, plastic and even metal can be used as O-Ring materials. Therefore, its medium adaptability and temperature adaptability are extremely wide.
   They have small installation groove sizes and a simple structure, with relatively low prices.

2.Standard material

3.Performance parameter

	Static Seal	Dynamic Seal
Working Pressure	No back-up ring, up to 10MPa. With the back-up ring, up to 40MPa. With special back-up ring, up to 200MPa.	No back-up ring, up to 0.5MPa With the back-up ring, up to 1MPa
Movement Speed	-	Maximum reciprocating speed up to 0.3m/s, maximum rotation speed up to 0.3m/s
Temperaure	PU:-40℃～110℃

4.Marking method:

Inner Diameter d×Wire Diameter (O-Ring cross section Dia.) d1

PU O RING .

5. Related Dimensions

R1=0.1～0.5, R2=0.2～1; e0.05～0.2; h=(0.70～0.90)d1, Generally static sealing takes close to the small value (0.70～0.80), the dynamic seal takes close to the large value (0.85～0.90)；b=(1.20～1.35)d1. The specific values are selected according to the section size of the seal.

6. Tolerance

O-Ring Wire Diameter Tolerance：

Wire diameter of O-Ring d1/mm	Tolerance ±mm	Wire diameter of O-Ring d1/mm	Tolerance ±mm
0-1.8	0.08	5.30-6.99	0.15
1.80-2.65	0.09	6.99-8.00	0.18
2.65-3.55	0.1	8.00-10.00	0.21
3.55-5.30	0.13	10.00-12.00	0.25

Inner diameter tolerance

Inner Dia.	Tolerance	Inner Dia.	Tolerance	Inner Dia.	Tolerance
d mm	土 mm	d mm	土 mm	d mm	土 mm
0.70～2.50	0.13	65.00～67.00	0.59	212.00～218.00	1.67
2.50～4.50	0.14	67.00～69.00	0.61	218.00～224.00	1.71
4.50～6.30	0.15	69.00～71.00	0.63	224.00～230.00	1.75
6.30～8.50	0.16	71.00～73 00	0.64	230.00～236.00	1.79
8.50～10.00	0.17	73.00～75 00	0.66	236.00～243.00	1.83
10.00～11.20	0.18	75.00～77.50	0.67	243.00～250.00	1.88
11.20～ 14.00	0.19	77.50～8000	0.69	250.00～258.00	1.93
14.00～16.00	0.2	80.00～82.50	0.71	258.00～265.00	1.98
16.00～18.00	0.21	82.50～85.00	0.73	265.00～272.00	2.02
18.00～20.00	0.22	85.00～87.50	0.75	272.00～280.00	2.08
20.00～21.20	0.23	87.50～90.00	0.77	280.00～290.00	2.14
21.20～23.60	0.24	90.00～92.50	0.79	290.00～300.00	2.21
23.60～25.00	0.25	92.50～95.00	0.81	300.00～307.00	2.25
25.00～26.50	0.26	95.00～97.50	0.83	307.00～315.00	2.3
26.50～28.00	0.28	97.50～100.00	0.84	315.00～325.00	2.37
28.00～30.00	0.29	100.00～103.00	0.87	325.00～335.00	2.43
30.00～31.50	0.31	103.00～106.00	0.89	335.00～345.00	2.49
31.50～33.50	0.32	106.00～109.00	0.91	345 00～355.00	2.56
33.50～34.50	0.33	109.00～112.00	0.93	355.00～365. 00	2.62
34.50～35.50	0.34	112.00～115.00	0.95	365.00～375.00	2.68
35.50～36.50	0.35	115.00～118.00	0.97	375.00～367.00	2.76
36.50～37.50	0.36	118.00～122.00	1	387.00～400.00	2.84
37.50～38.70	0.37	122.00～125.00	1.03	400.00～412.00	2.91
38.70～40.00	0.38	125.00～128.00	1.05	412.00～425.00	2.99
40.00～41.20	0.39	128.00～132.00	1.08	425.00～437.00	3.07
41.20～42.50	0.4	132.00～136.00	1.1	437.00～450.00	3.15
42.50～43.70	0.41	136.00～140.00	1.13	450.00～462.00	3.22
43.70～45.00	0.42	140.00～145.00	1.17	462.00～475.00	3.3
46.00～46.20	0.43	145.00～150.00	1.2	475.00～485.00	3.37
46.20～47.50	0.44	150.00～155.00	1.24	485.00～500. 00	3.45
47.50～48.70	0.45	155.00～160.00	1.27	500.00～515.00	3.54
48.70～50.00	0.46	160.00～165.00	1.31	515.00～530.00	3.63
50.00～51.50	0.47	165.00～170.00	1.34	530.00～545.00	3.72
51.50～53 00	0.48	170.00～175.00	1.38	545.00～560.00	3.81
53.00～54.50	0.5	175.00～180.00	1.41	560.00～580. 00	3.93
54.50～56.00	0.51	180.00～185.00	1.44	580.00～600.00	4.05
56.00～58.00	0.52	185.00～190.00	1.48	600.00～615.00	4.13
58.00～60.00	0.54	190.00～195.00	1.51	615.00～630.00	4.22
60.00～61.50	0.55	195.00～200.00	1.55	630.00～650.00	4.34
61.50～63.00	0.56	200.00～206.00	1.59	650.00～670.00	4.46
63.00～65.00	0.58	206.00～212.00	1.63

7. Product Dimension (American Standard AS568)

Inner Dia.	Wire	Part No.	Inner Dia.	Wire	Part No..	Inner Dia.	Wire	Part No.
Inner Dia.	Dia.	Part No.	Inner Dia.	Dia.	Part No..	Inner Dia.	Dia.	Part No.
d	d1		d	d1		d	d1
0.74	1.02	AS-001	120.24	3.53	AS-248	2.8	1.9	P3
1.07	1.27	AS-002	123.42	3.53	AS-249	3.8	1.9	P4
1.42	1.52	AS-003	126.59	3.53	AS-250	4.8	1.9	P5
1.78	1.78	AS-004	129.77	3.53	AS-251	5.8	1.9	P6
2.57	1.78	AS-005	132.94	3.53	AS-252	6.8	1.9	P7
2.9	1.78	AS-006	136.12	3.53	AS-253	7.8	1.9	P8
3.68	1.78	AS-007	139.29	3.53	AS-254	8.8	1.9	P9
4.47	1.78	AS-008	142.47	3.53	AS-255	9.8	1.9	P10
5.28	1.78	AS-009	145.64	3.53	AS-256
6.07	1.78	AS-010	148.82	3.53	AS-257	9.8	2.4	P10A
7.65	1.78	AS-011	151.99	3.53	AS-258	10.8	2.4	P11
9.25	1.78	AS-012	158.34	3.53	AS-259	11	2.4	P11.2
10.82	1.78	AS-013	164.69	3.53	AS-260	11.8	2.4	P12
12.42	1.78	AS-014	171.04	3.53	AS-261	12.3	2.4	P12.5
14	1.78	AS-015	177.39	3.53	AS-262	13.8	2.4	P14
15.6	1.78	AS-016	183.74	3.53	AS-263	14.8	2.4	P15
17.17	1.78	AS-017	190.09	3.53	AS-264	15.8	2.4	P16
18.77	1.78	AS-018	196.44	3.53	AS-265	17.8	2.4	P18
20.35	1.78	AS-019	202.79	3.53	AS-266	19.8	2.4	P20
21.95	1.78	AS-020	209.14	3.53	AS-267	20.8	2.4	P21
23.52	1.78	AS-021	215.49	3.53	AS-268	21.8	2.4	P22
25.12	1.78	AS-022	221.84	3.53	AS-269
26.7	1.78	AS-023	228.19	3.53	AS-270	21.7	3.5	P22A
28.3	1.78	AS-024	234.54	3.53	AS-271	22.1	3.5	P22.4
29.87	1.78	AS-025	240.89	3.53	AS-272	23.7	3.5	P24A
31.47	1.78	AS-026	247.24	3.53	AS-273	24.7	3.5	P25
33.05	1.78	AS-027	253.59	3.53	AS-274	25.2	3.5	P25.5
34.65	1.78	AS-028	266.29	3.53	AS-275	25.7	3.5	P26
37.82	1.78	AS-029	278.99	3.53	AS-276	27.7	3.5	P28
41	1.78	AS-030	291.69	3.53	AS-277	28.7	3.5	P29
44.17	1.78	AS-031	304.39	3.53	AS-278	29.2	3.5	P29.5
47.35	1.78	AS-032	329.79	3.53	AS-279	29.7	3.5	P30
50.52	1.78	AS-033	355.19	3.53	AS-280	30.7	3.5	P31
53.7	1.78	AS-034	380.59	3.53	AS-281	31.2	3.5	P31.5
56.87	1.78	AS-035	405.26	3.53	AS-282	31.7	3.5	P32
60.05	1.78	AS-036	430.66	3.53	AS-283	33.7	3.5	P34
63.22	1.78	AS-037	456.06	3.53	AS-284	34.7	3.5	P35
66.4	1.78	AS-038				35.2	3.5	P35.5
69.57	1.78	AS-039	10.46	5.33	AS-309	35.7	3.5	P36
72.75	1.78	AS-040	12.07	5.33	AS-310	37.7	3.5	P38
75.92	1.78	AS-041	13.64	5.33	AS-311	38.7	3.5	P39
82.27	1.78	AS-042	15.24	5.33	AS-312	39.7	3.5	P40
88.62	1.78	AS-043	16.81	5.33	AS-313	40.7	3.5	P41
94.97	1.78	AS-044	18.42	5.33	AS-314	41.7	3.5	P42
101.32	1.78	AS-045	19.99	5.33	AS-315	43.7	3.5	P44
107.67	1.78	AS-046	21.59	5.33	AS-316	44.7	3.5	P45
114.02	1.78	AS-047	23.16	5.33	AS-317	45.7	3.5	P46
120.37	1.78	AS-048	24.77	5.33	AS-318	47.7	3.5	P48
126.72	1.78	AS-049	26.34	5.33	AS-319	48.7	3.5	P49
133.07	1.78	AS-050	27.94	5.33	AS-320	49.7	3.5	P50
			29.51	5.33	AS-321
1.24	2.62	AS-102	31.12	5.33	AS-322	47.6	5.7	P48A
2.06	2.62	AS-103	32.69	5.33	AS-323	49.6	5.7	P50A
2.84	2.62	AS-104	34.29	5.33	AS-324	51.6	5.7	P52
3.63	2.62	AS-105	37.47	5.33	AS-325	52.6	5.7	P53
4.42	2.62	AS-106	40.64	5.33	AS-326	54.6	5.7	P55
5.23	2.62	AS-107	43.82	5.33	AS-327	55.6	5.7	P56
6.02	2.62	AS-108	46.99	5.33	AS-328	57.6	5.7	P58
7.59	2.62	AS-109	50.17	5.33	AS-329	59.6	5.7	P60
9.19	2.62	AS-110	53.34	5.33	AS-330	61.6	5.7	P62
10.77	2.62	AS-111	56.52	5.33	AS-331	62.6	5.7	P63
12.37	2.62	AS-112	59.69	5.33	AS-332	64.6	5.7	P65
13.94	2.62	AS-113	62.87	5.33	AS-333	66.6	5.7	P67
15.54	2.62	AS-114	66.04	5.33	AS-334	69.6	5.7	P70
17.12	2.62	AS-115	69.22	5.33	AS-335	70.6	5.7	P71
18.72	2.62	AS-116	72.39	5.33	AS-336	74.6	5.7	P75
20.29	2.62	AS-117	75.57	5.33	AS-337	79.6	5.7	P80
21.89	2.62	AS-118	78.74	5.33	AS-338	84.6	5.7	P85
23.47	2.62	AS-119	81.92	5.33	AS-339	89.6	5.7	P90
25.07	2.62	AS-120	85.09	5.33	AS-340	94.6	5.7	P95
26.64	2.62	AS-121	88.27	5.33	AS-341	99.6	5.7	P100
28.24	2.62	AS-122	91.44	5.33	AS-342	101.6	5.7	P102
29.82	2.62	AS-123	94.62	5.33	AS-343	104.6	5.7	P105
31.42	2.62	AS-124	97.79	5.33	AS-344	109.6	5.7	P110
32.99	2.62	AS-125	100.97	5.33	AS-345	111.6	5.7	P112
34.59	2.62	AS-126	104.14	5.33	AS-346	114.6	5.7	P115
36.17	2.62	AS-127	107.32	5.33	AS-347	119.6	5.7	P120
37.77	2.62	AS-128	110.49	5.33	AS-348	124.6	5.7	P125
39.34	2.62	AS-129	113.67	5.33	AS-349	129.6	5.7	P130
40.94	2.62	AS-130	116.84	5.33	AS-350	131.6	5.7	P132
42.52	2.62	AS-131	120.02	5.33	AS-351	134.6	5.7	P135
44.12	2.62	AS-132	123.19	5.33	AS-352	144.6	5.7	P145
45.69	2.62	AS-133	126.37	5.33	AS-353	149.6	5.7	P150
47.29	2.62	AS-134	129.54	5.33	AS-354
48.9	2.62	AS-135	132.72	5.33	AS-355	149.5	8.4	P150A
50.47	2.62	AS-136	135.89	5.33	AS-356	154.5	8.4	P155
52.07	2.62	AS-137	139.07	5.33	AS-357	159.5	8.4	P160
53.64	2.62	AS-138	142.24	5.33	AS-358	164.5	8.4	P165
55.25	2.62	AS-139	145.42	5.33	AS-359	169.5	8.4	P170
56.82	2.62	AS-140	148.59	5.33	AS-360	174.5	8.4	P175
58.42	2.62	AS-141	151.77	5.33	AS-361	179.5	8.4	P180
59.99	2.62	AS-142	158.12	5.33	AS-362	184.5	8.4	P185
61.6	2.62	AS-143	164.47	5.33	AS-363	189.5	8.4	P190
63.17	2.62	AS-144	170.82	5.33	AS-364	194.5	8.4	P195
64.77	2.62	AS-145	177.17	5.33	AS-365	199.5	8.4	P200
66.34	2.62	AS-146	183.52	5.33	AS-366	204.5	8.4	P205
67.95	2.62	AS-147	189.87	5.33	AS-367	208.5	8.4	P209
69.52	2.62	AS-148	196.22	5.33	AS-368	209.5	8.4	P210
71.12	2.62	AS-149	202.57	5.33	AS-369	214.5	8.4	P215
72.69	2.62	AS-150	208.92	5.33	AS-370	219.5	8.4	P220
75.87	2.62	AS-151	215.27	5.33	AS-371	224.5	8.4	P225
82.22	2.62	AS-152	221.62	5.33	AS-372	229.5	8.4	P230
88.57	2.62	AS-153	227.97	5.33	AS-373	234.5	8.4	P235
94.92	2.62	AS-154	234.32	5.33	AS-374	239.5	8.4	P240
101.27	2.62	AS-155	240.67	5.33	AS-375	244.5	8.4	P245
107.62	2.62	AS-156	247.02	5.33	AS-376	249.5	8.4	P250
113.97	2.62	AS-157	253.37	5.33	AS-377	254.5	8.4	P255
120.32	2.62	AS-158	266.07	5.33	AS-378	259.5	8.4	P260
126.67	2.62	AS-159	278.77	5.33	AS-379	264.5	8.4	P265
133.02	2.62	AS-160	291.47	5.33	AS-380	269.5	8.4	P270
139.37	2.62	AS-161	304.17	5.33	AS-381	274.5	8.4	P275
145.72	2.62	AS-162	329.57	5.33	AS-382	279.5	8.4	P280
152.07	2.62	AS-163	354.97	5.33	AS-383	284.5	8.4	P285
158.42	2.62	AS-164	380.37	5.33	AS-384	289.5	8.4	P290
164.77	2.62	AS-165	405.26	5.33	AS-385	294.5	8.4	P295
171.12	2.62	AS-166	430.66	5.33	AS-386	299.5	8.4	P300
177.47	2.62	AS-167	456.06	5.33	AS-387	314.5	8.4	P315
183.82	2.62	AS-168	481.41	5.33	AS-388	319.5	8.4	P320
190.17	2.62	AS-169	506.81	5.33	AS-389	334.5	8.4	P335
196.52	2.62	AS-170	532.21	5.33	AS-390	339.5	8.4	P340
202.87	2.62	AS-171	557.61	5.33	AS-391	354.5	8.4	P355
209.22	2.62	AS-172	582.68	5.33	AS-392	359.5	8.4	P360
215.57	2.62	AS-173	608.08	5.33	AS-393	374.5	8.4	P375
221.92	2.62	AS-174	633.48	5.33	AS-394	384.5	8.4	P385
228.27	2.62	AS-175	658.88	5.33	AS-395	399.5	8.4	P400
234.62	2.62	AS-176
240.97	2.62	AS-177	113.67	6.99	AS-425	24.4	3.1	G25
247.32	2.62	AS-178	116.84	6.99	AS-426	29.4	3.1	G30
253.67	2.62	AS-179	120.02	6.99	AS-427	34.4	3.1	G35
			123.19	6.99	AS-428	39.4	3.1	G40
4.34	3.53	AS-201	126.37	6.99	AS-429	44.4	3.1	G45
5.94	3.53	AS-202	129.54	6.99	AS-430	49.4	3.1	G50
7.52	3.53	AS-203	132.72	6.99	AS-431	54.4	3.1	G55
9.12	3.53	AS-204	135.89	6.99	AS-432	59.4	3.1	G60
10.69	3.53	AS-205	139.07	6.99	AS-433	64.4	3.1	G65
12.29	3.53	AS-206	142.24	6.99	AS-434	69.4	3.1	G70
13.87	3.53	AS-207	145.42	6.99	AS-435	74.4	3.1	G75
15.47	3.53	AS-208	148.59	6.99	AS-436	79.4	3.1	G80
17.04	3.53	AS-209	151.77	6.99	AS-437	84.4	3.1	G85
18.64	3.53	AS-210	158.12	6.99	AS-438	89.4	3.1	G90
20.22	3.53	AS-211	164.47	6.99	AS-439	94.4	3.1	G95
21.82	3.53	AS-212	170.82	6.99	AS-440	99.4	3.1	G100
23.39	3.53	AS-213	177.17	6.99	AS-441	104.4	3.1	G105
24.99	3.53	AS-214	183.52	6.99	AS-442	109.4	3.1	G110
26.57	3.53	AS-215	189.87	6.99	AS-443	114.4	3.1	G115
28.17	3.53	AS-216	196.22	6.99	AS-444	119.4	3.1	G120
29.74	3.53	AS-217	202.57	6.99	AS-445	124.5	3.1	G125
31.34	3.53	AS-218	215.27	6.99	AS-446	129.4	3.1	G130
32.92	3.53	AS-219	227.97	6.99	AS-447	134.4	3.1	G135
34.52	3.53	AS-220	240.67	6.99	AS-448	139.4	3.1	G140
36.09	3.53	AS-221	253.37	6.99	AS-449	144.4	3.1	G145
37.69	3.53	AS-222	266.07	6.99	AS-450
40.87	3.53	AS-223	278.77	6.99	AS-451	149.3	5.7	G150
44.04	3.53	AS-224	291.47	6.99	AS-452	154.3	5.7	G155
47.22	3.53	AS-225	304.17	6.99	AS-453	159.3	5.7	G160
50.39	3.53	AS-226	316.87	6.99	AS-454	164.3	5.7	G165
53.57	3.53	AS-227	329.57	6.99	AS-455	169.3	5.7	G170
56.74	3.53	AS-228	342.27	6.99	AS-456	174.3	5.7	G175
59.92	3.53	AS-229	354.87	6.99	AS-457	179.3	5.7	G180
63.09	3.53	AS-230	367.67	6.99	AS-458	184.3	5.7	G185
66.27	3.53	AS-231	380.37	6.99	AS-459	189.3	5.7	G190
69.44	3.53	AS-232	393.07	6.99	AS-460	194.3	5.7	G195
72.62	3.53	AS-233	405.26	6.99	AS-461	199.3	5.7	G200
75.79	3.53	AS-234	417.96	6.99	AS-462	209.3	5.7	G210
78.97	3.53	AS-235	430.66	6.99	AS-463	219.3	5.7	G220
82.14	3.53	AS-236	443.36	6.99	AS-464	229.3	5.7	G230
85.32	3.53	AS-237	456.06	6.99	AS-465	239.3	5.7	G240
88.49	3.53	AS-238	468.76	6.99	AS-466	249.3	5.7	G250
91.67	3.53	AS-239	481.46	6.99	AS-467	259.3	5.7	G260
94.84	3.53	AS-240	494.16	6.99	AS-468	269.3	5.7	G270
98.02	3.53	AS-241	506.86	6.99	AS-469	279.3	5.7	G280
101.19	3.53	AS-242	532.26	6.99	AS-470	289.3	5.7	G290
104.37	3.53	AS-243	557.66	6.99	AS-471	299.3	5.7	G300
107.54	3.53	AS-244	582.68	6.99	AS-472
110.72	3.53	AS-245	608.08	6.99	AS-473
113.89	3.53	AS-246	633.48	6.99	AS-474
117.07	3.53	AS-247	658.88	6.99	AS-475

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