O-Rings by Moore International

ID	Nominal Section				Materials include: FEP Encapsulated = Its temperature range is -20°C to +204°C, An encapsulated O-ring comprises an elastomer energising centre, which has a seamless jacket made from fluoropolymer. EPDM = This has very good resistance to weathering, o-zone, water and steam. Also it has low and high temperature capability, which is excellent, having good resistance to set with good elasticity. High Nitrile (75°/90° Shore) = Neoprene = This has outstanding resistance to weathering and ageing, this makes neoprene good for outdoor applications, also its high and low temperatures are good and its elasticity and scratch resistance is of good standard. Nitrile Rubber = this is split into 3 categories - high, medium and low nitrile, this all depends on the proportion of acrylonitrile in the polymer. The substance can vary, 18% - 45% approx. this affects the properties; acrylonitrile is the oil resistant component of the copolymer. PTFE = The temperature range is from -195°c - +250°c, P.T.F.E. is an extremely inert material and is untouched by practically every known chemical together with nearly all acids, alkalis and solvents. These properties make it an ideal substance for O-ring Back up Rings. Its cold flow properties under constant strain are generally a disadvantage in P.T.F.E. O-Rings; for example, it has to small a memory to go back to its original shape. Silicone (Red/White/Black) = Its temperature range is from -65°C to +250°c, Silicone has unfortunate tensile strength, tear and scratch resistance, however it has brilliant resistance to extreme temperatures. Its retention of characteristics at high temperatures is superior to other elastic materials. Viton = This is good for high temperatures and has excellent resistance against hydraulic oils, petrol and many other chemicals, as well as weathering and o-zone conditions. WRC Approved Materia = Water potable approved.
	1/16	3/32	1/8	3/16
	Actual Size
	(1.78)	(2.62)	(3.53)	(5.33)
	BS Number
1/32	001
3/64	002
1/16	003	102
5/64	004
3/32	005	103
1/8	006	104
5/32	007	105
3/16	008	106	201
7/32	009	107
1/4	010	108	202
5/16	011	109	203
3/8	012	110	204
7/16	013	111	205	309
1/2	014	112	206	310
9/16	015	113	207	311
5/8	016	114	208	312
11/16	017	115	209	313
3/4	018	116	210	314
13/16	019	117	211	315
7/8	020	118	212	316
15/16	021	119	213	317
1	022	120	214	318
1 1/16	023	121	215	319
1 1/8	024	122	216	320
1 3/16	025	123	217	321
1 1/4	026	124	218	322
1 5/16	027	125	219	323
1 3/8	028	126	220	324
1 7/16		127	221
1 1/2	029	128	222	325
1 9/16		129
1 5/8	030	130	223	326
1 11/16		131
1 3/4	031	132	224	327
1 13/16		133
1 7/8	032	134	225	328
1 15/16		135
2	033	136	226	329
2 1/16		137
2 1/8	034	138	227	330