Square Ptfe O Rings

Square cut o rings have been largely phased out by elastomeric sealing manufacturers since the invention of the quad ring or commonly also called a q ring or x ring.

Square ptfe o rings.

Buna n o rings nitrile o rings nbr. Standard usa square rings sizes. Non standard sizes can be made within a few weeks typically without tooling fees so no need to settle for a less than optimal fit. They cover more surface than round profile o rings for a better seal in static applications such as hose pipe and faucet connections.

Industrial square ring buna n duro 70 kit 436 pieces 36 size square o rings are square cross section seals designed to be interchangeable with standard as568 o rings 5 0 out of 5 stars 4 60 00 60. Rated for pressure up to 10 000 psi these seals withstand the highest pressure of our piston seals. Square rings and rubber washers can be molded machined or cut cost effectively depending on the size material and quantity. Consider replacing square rings with o rings or x rings that often provide greater performance for the same or.

Ptfe backup o rings are designed to be used in conjunction with standard o rings to help prevent extrusion in high pressure applications or where extrusion gaps are excessive. Should not exceed 3 of the rod gland diameter for o rings with an i d. Buna n o rings also referred to as nbr o rings and nitrile o rings are the most widely used o ring material in the world because of low cost good mechanical performance with resistance to water most basic oils lubricants and some fuels many pneumatic hydraulic systems propane natural gas and the. The o ring s outside diameter o d should be at least equal to or larger than the rod gland diameter to give interference on the o ring s o d.

Greater than 250 mm or 5 for o rings with an i d. Tolerances vary by manufacturing method so please contact our technical sales team if tight tolerances are required. Smaller than 250 mm. Ptfe exhibits some unique properties when used in o ring sealing systems the most well known is its impervious nature to virtually all fluids and gasses from 100 f to 450 f.

Ptfe o rings for tube fittings with straight thread connection. A square o ring prevents these piston seals from rocking in the groove. Rings for claw clamp and bolt together high vacuum fittings for stainless steel tubing. Wherever possible use a backup ring on each side of the o ring.

Square o rings are still available from some manufacturers but they typically require tooling charges and or large quantity orders to produce them. Square ring seal chart. Square buna n nitrile nbr o rings 70 durometer. Square rings and rubber washers can be used in basic cost sensitive applications.