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 . 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.
Rapportera en annan bildRapportera den stötande bilden. 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 . Parker’s Parbak back-up rings help prevent extrusion in.
Unlike many PTFE back-up rings, Parbak rings are continuous; they do not have a . Polyester backup rings are available coloured orange as . 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 . Our back-up rings are normally supplied as a spiral of two turns. This enables the back-up ring to be opened with ease for fitting over a shaft, and ensures the . There are three basic types of PTFE back-up rings in use: single turn (scarf cut), multi- turn (spiral cut) .
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 hold an elastomeric seal to its designed shape, in its correct place. Often used with O-Rings to prevent extrusion at high pressures. Back Up Rings are flat, split, spiral or contoured washer type fittings used to protect an O-Ring seal from extrusion at higher pressures and temperatures.
Installation of backup ring and o-ring on to full open suction valve seat. In a sealing application, backup rings provide added extrusion resistance, and prevent damage to O-rings and seals when subjected to high pressures, larger . Back-up rings are washer-like devices that are used to prevent a seal from extruding through any gaps while under pressure. HOERBIGER back-up rings are used to prevent non-metallic sealing rings from extruding into the space between the piston rod and packing cup.