A back-up ring is a rigid ring that holds an elastomeric seal or plastic (such as Polyethylene) connection to its designed shape and in its correct place. Under specific conditions, there is a risk for gap extrusion (→ Extrusion gaps and back-up rings). Back-up rings prevent O-rings from gap extrusion in static radial .
Back-Up Rings buy on-line or call 208-413-63- back-up rings provide extra. A back-up ring is designed to fit between the O-ring and the extrusion gap and . A Back Up Ring is a ring of har extrusion resistant material such as high-durometer Nitrile, Nylon, or PTFE, which is designed to fit between an O-ring and an . Back-up rings are anti-extrusion elements designed to prevent the migration of sealing material into the extrusion gap under the system pressure.
Installation of backup ring and o-ring on to full open suction valve seat. Columbia provides a full line of back-up rings and other anti-extrusion devises. Back-up rings are used with a primary seal such as an o-ring in both dynamic . Back-up rings are plastic or rubber rings used to prevent the O-ring from entering the clearance gap. When high pressures are exerted on the O-ring, its soft . Back-up Rings hold an elastomeric seal to its designed shape, in its correct place.
Often used with O-Rings to prevent extrusion at high pressures. In a sealing application, backup rings provide added extrusion resistance, and prevent damage to O-rings and seals when subjected to high pressures, larger . The O-ring is the most common type of fluid seal.
An O-ring’s simple design lends itself to a multitude of sealing uses, including static, reciprocal, oscillating, and . Distributors of Rubber Backup Rings, Teflon Backup Rings, Urethane Backup Rings, Leather Backup Rings and Custom Backup Rings. Back-up rings are washer-like devices that are used to prevent a seal from extruding through any gaps while under pressure. Shop for O-Ring Backup Seals at Grainger. Many materials can be used but primarily . MFP Seals manufactures both inch and metric sized O-Rings. Choose from the wide variety of colored O-Rings from the O-Ring size charts.
A backup ring is made of a harder material than the o-ring itself, but sufficiently resilient to deform under pressure to close the extrusion gap.