Compound O-Ring

PTFE (Polytetrafluoroethyene) is a fluorocarbon polymers. The chemical structure of PTFE has the hydrogen atoms of polyethylene completely displaced by fluorine atoms to form a high molecule. This is a very stable structure. That is why PTFE is a polymer that never age.

PTFE is a superior sealing material. It is clean and non-sticking, you can use it for food industry. It can work up to 260 C. It can work at PH 0-14. it can be processed into film, block or any shape. It has a low coefficient of friction and lubrication is not always necessary. PTFE can work together with other materials like fiberglass or copper to get a better mechanical property. When PTFE is expanded properly, the fiber changes from hair-like structure to a web-like structure and become much more stronger while it is much lighter.

PTFE is also a young material. Until today SinoSeal and its team has been probing into this new product and you can definitely expect progress in this field.

Compound O-Ring

[ Features ]
Compound O-Ring adopts special rubber resisting high temprature,F+ plastic and special engineering to compound this sealing product.It not only has low contraction permanent set functions of rubber O-ring,but also resist heat,cold,oil,friction,chemical corrusion and other performances.It can be used in all kind of dynamical seal and static seal widely,meanwhile can replace all traditional rubber and plastic o-ring.

[ Main properties ]
We can produce other no-nominal compound o-ring.

ltem Unit   A B C Normal Ckonditions Hardness JIS Hs 70-90 70-90 60-75 Elongation,min % 60 60 80 Tensile Strength,min MPa 16 16 16 Compressibility % 50-60 50-60 60-75 Recovery % >85 >85 >70 Permanentset % <10 <10 <20 230SLSLSLá24h hot air ageing Change of hardness,max. JIS Hs -5-+5 -5-+5 -5-+5 Change of tensile strength,max. % -15 -15 -15 Change of elongation,max. % -20 -20 -20 Compression permanentset 175°C×70h % ≤20 ≤20 ≤30 Colour     brown black red Applications Temperature Limits °C -20-250 -20-200 -50-200 Pressure Limits MPa 0-35 Strong caustics,moderate acids,chlorine,gases,wter,steam,hydrocarbons,hydrogen and aluminum fluoride except element fluorine and fusion sodium.

[ Specifications ]

Setion Diameter Nominal Inside Diameter 1.80±0.10 20±0.10-300±1.60 2.60±0.10 20±0.15-300±1.60 3.55±0.10 25±0.15-300±1.60 4.00±0.10 40±0.20-300±1.60 4.60±0.10 40±0.20-300±1.60 5.00±0.10 40±0.25-400±1.80 5.30±0.13 60±0.30-400±1.80 5.50±0.13 60±0.30-400±1.80 5.70±0.13 60±0.30-400±2.00 6.00±0.13 80±0.80-400±2.00 6.30±0.14 80±0.80-400±2.00 7.00±0.14 100±0.65-1000±4.00 8.00±0.16 110±1.00-2000±4.00 10.00±0.18 200±1.50-2000±6.00 12.00±0.18 ≥ l400±1.50-6.00 14.00±0.18 ≥ 400±1.50-6.00 16.00±0.18 ≥ 400±1.50-6.00

Compound o-rings combines the good futures of rubber and PTFE. Rubber is a elastomer but it might be unable to resist strong acid or alkalis. The PTFE jacket outside help to protect the rubber since PTFE can work at PH 0-14. It is often used under some harsh circumstances.