PTFE O Ring White PTFE Seal Ring O-Ring

PTFE O-Rings

A failed O-ring costs more than the part. It means downtime, leaked chemicals, and sometimes damaged equipment. DSP Sealing supplies PTFE O-rings for bulk buyers whose seals must withstand aggressive media, heat, or cold, in virgin and filled grades.

Features

• Virgin PTFE resists most acids, bases, and solvents. It is not suited to molten alkali metals or fluorinating agents. Filled grades trade some of that resistance for strength or wear performance, so tell us your media, and we will confirm the right grade.
• PTFE works at both cryogenic and high temperatures. We confirm the working range for each grade against your operating conditions.
• The non-stick surface reduces wear in dynamic sealing and helps the seal last longer.
• Virgin, glass-filled, carbon-filled, and bronze-filled PTFE. Each one is described below.

Material Grades and Applications

Virgin PTFE suits clean environments such as food and pharma equipment and semiconductor labs, where purity and non-contamination matter most. Glass-filled PTFE is the choice for high-pressure flanges, mechanical assemblies, and industrial pumps because it resists creep under load. Carbon-filled PTFE fits dynamic seals in valves, compressors, and sliding interfaces, where its higher wear resistance helps. Bronze-filled PTFE is used in heavy machinery and other load-bearing seals, with higher compressive strength and thermal conductivity.

Choosing PTFE for Your Seal

Solid PTFE has far less elasticity than rubber, so it suits static seals and low-speed dynamic seals best. If you are unsure whether PTFE fits your gland, send us the drawing and operating conditions, and we will advise.

Bulk Supply and Delivery

Volume orders get bulk pricing, and the unit price drops as quantity goes up. This suits procurement teams buying for large production runs or several sites. The quote confirms lead times. Our certifications are listed on the About Us page.

Request a Bulk Quote

Send us the O-ring size, material grade, quantity, and operating conditions (media, temperature, pressure). We will reply with pricing and a delivery timeline. MOQ and tolerances are available on request.