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PTFE O-Rings BS004 to BS050 Cross Section 1.78mm£0.2718 – £2.3485
PTFE O-Rings BS102 to BS178 Cross Section 2.62mm£0.2718 – £8.0600
PTFE O-Rings BS201 to BS284 Cross Section 3.53mm£0.3588 – £17.7661
PTFE O-Rings BS309 to BS395 Cross Section 5.33mm£1.4243 – £53.1133
PTFE O-Rings BS425 to BS475 Cross Section 6.99mm£17.4073 – £92.4073
PTFE O-rings are used where many other materials and elastomers are unsuitable for the application conditions, i.e. friction, chemical resistance and temperature.
PTFE O-rings are used for a wide range of applications in many industries, including aerospace, food and drink, pharmaceuticals, telecommunications and semi-con.
PTFE O-Rings can be used for axial static faces or flange chemical resistance. PTFE is the most chemically inert of the O-ring materials.
PTFE is resistant to most chemicals including acids, bases, oils, steam and other chemicals. It is also very tough and abrasive resistant, even at elevated temperatures.
PTFE is chemical resistant, non-stick and electrically resistant and is superior to most other materials in these conditions.
Hardness is measured using the Shore D scale and is usually 54 – 57° (this equates to approx. 9° on the Shore A scale.)
Seals fabricated from this material feature outstanding weather resistance, high resistance to ozone, and high resistance to the degrading effects of exposure to such solvents as acetone, MEK, and xylene. Possessing average elastomer characteristics of 2,500 to 3,500 psi tensile strength, and 300% elongation, they are tough, impact resistant, low friction, non-twisting performers over an extremely wide temperature range.