Imperial O-Rings 7 Bore - 26 Bore by Moore International

The O-Ring range is vast, starting from BS001 (0.029ins bore, 0.040 cross section) right through to BS475, (25.94 ins bore, 0.275 cross section).Available in nitrile, viton, EPDM, silicone, food quality nitrile, PTFE and even encapsulated. Encapsulated are normally made from silicone or viton, and have a seamless FEP coating wich can help in chen=mical and extreme conditions.

As well as the British standard range, we also stock sizes from the German/Swedish European range of sizes. PTFE back up rings can also be sourced to suit most O-Ring sizes. To add to the already massive range of O-Rings stocked, a range of O-Ring cord is available with suitable adhesives for joining. Where the O-Ring is of a very large diameter, a scarf jointing/vulcanising service can be utilised.

Based around similar sizes to British Standard O-Rings, these are particularly useful in high dynamic applications or low friction applications, as they create lower friction than conventional O-Rings.

Please ask for your indivdual solution. Many styles and materials are available.

ID	Nominal selection				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.
	3/32	1/8	3/16	1/4
	Actual Size
	(2.62)	(3.53)	(5.33)	(7.00)
	BS Number
7	167	262	365	441
7 1/4	168	263	366	442
7 1/2	169	264	367	443
7 3/4	170	265	368	444
8	171	266	369	445
8 1/4	172	267	370	445A
8 1/2	173	268	371	446
8 3/4	174	269	372	446A
9	175	270	373	447
9 1/4	176	271	374	447A
9 1/2	177	272	375	448
9 3/4	178	273	376	448A
10		274	377	449
10 1/4				449A
10 1/2		275	378	450
10 3/4				450A
11		276	39	451
11 1/4				451A
11 1/2		277	380	452
11 3/4				452A
12		278	381	453
12 1/2				454
13		279	382	455
13 1/2				456
14		280	383	457
14 1/2				458
15		281	384	459
15 1/2				460
16		282	385	461
16 1/2				462
17		283	386	463
17 1/2				464
18		284	387	465
18 1/2				466
19			388	467
19 1/2				468
20			389	469
21			390	470
22			391	471
23			392	472
24			393	473
25			394	474
26			395	475