supply high quality PTFE wear ring

  a good news A good news: 1.We are a member of Alibaba Trade Assurance which is a new service provided by Alibaba, safeguarding buyer's payment to suppliers to ensure suppliers fulfill their obligations regarding order delivery and product quality. 2.Glad to tell everyone that we have joined the Trade Assurance on Alibaba to protect your payment to make sure that we deliver on time and manufacture quality products as required. 3. we have a Trade Assurance Amount $30000 granted by Alibaba.com. It means you will receive 100% refund of the Trade Assurance Amount for orders not meeting agreed delivery or quality terms. The new system will allow the buyers to rate and review our experience before you place the order.  More info about Alibaba Trade Assurance, please visit: tradeassurance.alibaba.com Alibaba will refund to 100% of trade assurance order amount on our contract if : 1.Your order i s not shipped on time as stated in your contract. 2.Your products do not meet the quality requirements stated in your contract. 1.We are a member of Alibaba Trade Assurance which is a new service provided by Alibaba, safeguarding buyer's payment to suppliers to ensure suppliers fulfill their obligations regarding order delivery and product quality. 2.Glad to tell everyone that we have joined the Trade Assurance on Alibaba to protect your payment to make sure that we deliver on time and manufacture quality products as required. 3. we have a Trade Assurance Amount $30000 granted by Alibaba.com. It means you will receive 100% refund of the Trade Assurance Amount for orders not meeting agreed delivery or quality terms. The new system will allow the buyers to rate and review our experience before you place the order.  More info about Alibaba Trade Assurance, please visit: tradeassurance.alibaba.com. FAQ: 1.How can I get a sample? Normally small sample (sizes less than 150*150mm) can be sent free of charge .Freight collect or Negotiable . 2. MOQ can be 50KGS or 100kgs ? Yes, You can place your small order . Pls kindly tell us your ordering weight or pieces, we would quote for you immediately . Because the unit price cost and freight cost of small order would be higher than MOQ'S . Pls also consider our MOQ ,the cost can be reduced . 3. Can we order a large quantities with a discount price ? Yes, you will be quoted a better price if qty is large . The larger the volume is, the more discount you can enjoy.   contact:tina                trademanager number:cn1500184369
wechat:1040374065    skype:lu.tina952    qq:2047661944   product description About PTFE PTFE is made by polymerization of tetrafluoroethylene polymer,which has excellent chemical stability, corrosion-resistance, sealing, self-lubrication,nonstick, electrical insulation and good anti-aging endurance, excellent high and low temperature capability . The mechanical properties of PTFE will be improved if add some fillers, while maintaining other PTFE excellent performance.There are several varieties of fillers such as glass fiber, metal, metal oxides, graphite, molybdenum disulfide, carbon slender, polyimide, EKONOL and so on. PTFE is excellent for low friction bearings, bushes, rollers and pulleys. PTFE is also almost exclusively used in cryogenic components due to its ultra low operating temperatures. Unfilled P.T.F.E canbe characterised by the following properties: Chemically inert Insoluble in all known solvents below 300ºC High thermal stability, continuous service temperature range -270º to 260ºC Low coefficient of friction Outstanding electrical and dielectric properties Resistant to stress cracking and weathering Limited use in structural components because of low modulus of elasticity Poor wear resistance , Poor mechanical strength Non toxic EU and FDA approval for food contact applications Specification: PTFE backup ring are used for static and dynamic applications. It's better used for static sealing applications with corresponing O-ring.The use of PTFE backup ring will help control O-ring extrusion in high pressure applictions. PTFE backup rings are compatible with all hydraulic fluids,since they are virtually chemically inert,and also can be used in applications involving elevated operating temperature conditions.Inaddition,PTFE backup rings can greatly improve O-ring performance and extend service life, even if extrusion does not present a problem. Size List:

OD / ID * high	OD / ID * high	OD / ID * high	OD / ID * high
12.5*8.5*2	32*20*3	104*61*3	190*102*3
14*4.3*3	52*18*1.5	115*43*3	190*141*3
14*8*3	53*18*3	120*49*3	195*102*3
16*5.2*3	58*22*3	124*77*3	200*115*3
19.5*11*2	60*40*2	125*35*3	210*115*3
20*6.5*3	63*78*3	130*61*3	220*167*3
20*12*2	69.8*41*1.2	130.5*59.5*1.5	235*141*3
20*14*3	74*35*3	134*90*3	245*192*3
21*16*2.4	75*18*3	135*43*3	250*141*3
24*17*3	80*22*3	140*49*3	270*218*3
24*18*2	84*43*3	144*102*3	280*167*3
24.2*18*2.5	85*28*3	155*61*3	305*192*3
26*6.5*3	89*49*3	155*77*3	330*218*3
28*24*2	90*18*3	159*115*3	333*270*3
28*24*3.2	95*22*3	175*77*3	378*321*3
30*20*5	95*35*3	180*90*3	423*359*3
30*24*2	100*28*3	185*90*3	486*410*3

PTFE seal  Properties: Working temperature:-180~+260°C Melting point:327°C  Yield strength: 23MPa Density: 2.2-2.3g/m3 Coefficient of friction<0.10  Strong chemical-resistant our product show:  Company information: Shaanxi Tiangogn PTFE& Plastic Material Co.,Ltd in Xi'an China is a professional manufacturer of all kinds PTFE products. We can provide all kinds of high quality Ptfe moulded & extruded rod,sheet,skived sheet,film, thread seal tape,expanded seal tape, packing, sealing, valve seats and so on to fulfill the needs of our worldwide clients.In the domestic we have copperated with many military college to improve our products line of Filled PTFE Products. Now our products have widely application in Chemical,mechanical ,electronical, petrol and some other applications. Our products can be used at the following fields Pure PTFE Packing: Ps : 1.We support that any size as customer inquiry with out mould fee . 2.Free sample can get to your office directly just need freight collected . Pure ptfe certifications:     

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Product Categories : PTFE Sealing > PTFE O-rings