Square Ptfe O Rings

These o rings have a square profile with flat edges on all four sides.

Square ptfe o rings.

Consider replacing square rings with o rings or x rings that often provide greater performance for the same or. Square rings and rubber washers can be used in basic cost sensitive applications. Only molten alkaline metals and certain halogenated compounds will degrade its integrity. 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.

Ptfe o rings for tube fittings with straight thread connection. Rated for pressure up to 10 000 psi these seals withstand the highest pressure of our piston seals. 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. Rings for claw clamp and bolt together high vacuum fittings for stainless steel tubing.

Square ring seal chart. Wherever possible use a backup ring on each side of the o ring. Should not exceed 3 of the rod gland diameter for o rings with an i d. Buna n o rings nitrile o rings nbr.

Smaller than 250 mm. 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. Square rings and rubber washers can be molded machined or cut cost effectively depending on the size material and quantity. Square buna n nitrile nbr o rings 70 durometer.

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. 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. Square o rings are still available from some manufacturers but they typically require tooling charges and or large quantity orders to produce them. 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. Tolerances vary by manufacturing method so please contact our technical sales team if tight tolerances are required. Rectangular cross section features a split for easy installation. Greater than 250 mm or 5 for o rings with an i d.