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 5985-00-889-5198
NSN 7035-00-337-8745
NSN 6110-01-068-3982
NSN 5975-01-292-6949
NSN 5950-00-853-2315
NSN 5895-01-601-5931
NSN 5998-00-061-7636
NSN 6610-01-139-4713
NSN 6145-01-441-2252
NSN 2925-01-239-6044
NSN 4140-01-202-7853
NSN 6610-01-010-4516