Square rings and rubber washers can be used in basic cost sensitive applications.
Square ptfe o rings.
Square o rings are still available from some manufacturers but they typically require tooling charges and or large quantity orders to produce them.
Consider replacing square rings with o rings or x rings that often provide greater performance for the same or.
These o rings have a square profile with flat edges on all four sides.
Greater than 250 mm or 5 for o rings with an i d.
Wherever possible use a backup ring on each side of the o ring.
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.
They cover more surface than round profile o rings for a better seal in static applications such as hose pipe and faucet connections.
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.
Smaller than 250 mm.
Standard usa square rings sizes.
Rings for claw clamp and bolt together high vacuum fittings for stainless steel tubing.
Ptfe o rings for tube fittings with straight thread connection.
Square rings and rubber washers can be molded machined or cut cost effectively depending on the size material and quantity.
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.
Rectangular cross section features a split for easy installation.
Square buna n nitrile nbr o rings 70 durometer.
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.
Only molten alkaline metals and certain halogenated compounds will degrade its integrity.
Square ring seal chart.
Buna n o rings nitrile o rings nbr.
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.
Tolerances vary by manufacturing method so please contact our technical sales team if tight tolerances are required.
Rated for pressure up to 10 000 psi these seals withstand the highest pressure of our piston seals.
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.
