A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6145-00-648-2726
NSN 6610-01-026-1701
NSN 2925-01-577-0004
NSN 5985-00-026-1921
NSN 6620-00-155-2608
NSN 5996-00-784-7912
NSN 6645-00-145-6411
NSN 5975-01-293-0750
NSN 6145-01-192-0738
NSN 5998-01-468-9588
NSN 2925-01-446-6523
NSN 5895-01-492-6790