Material & construction
Fixed catalogue dimensions and specified material grade; sealing function depends on the mating geometry and service.
WOG-449 / Packing and small seals
PTFE Back-up Ring
Repeat-purchase sealing and protection products for standard piping and maintenance interfaces.
| Size basis | Companion AS568 ring and gland |
|---|---|
| Material | Virgin / filled PTFE grade |
| Form | Split / solid catalogue rings |
| Functional role | Extrusion support; not a primary seal |
Industry reference selections; ordered specification requires supplier confirmation.
View catalogue page 88 ↗Options & acceptance
Lock dimensions, compound or metal grade and acceptance limits before repeat orders; retain batch traceability.
Application & RFQ details
RFQ: seal size or cross-section, compound/packing grade, gland dimensions and service fluid. Confirm temperature and pressure, including gas decompression duty where relevant.
Standards & documents
Confirm dimensions and material test data. A generic material name does not establish a pressure or temperature rating.
Packing
Separated cartons on pallets; protect threads, sealing faces and fragile parts. State gross weight per package.
Related products
WOG-342
Braided PTFE Gland Packing
Valve-stem and pump-gland maintenance in oil, gas and utility services.
Specifications & details ↗
WOG-343
Braided Graphite Gland Packing
Valve-stem and pump-gland maintenance in oil, gas and utility services.
Specifications & details ↗
WOG-448
AS568 O-ring Assortment
Repeat-purchase sealing and protection products for standard piping and maintenance interfaces.
Specifications & details ↗