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 5985-01-418-3929
NSN 5855-00-087-7833
NSN 4140-00-927-7992
NSN 5895-01-072-9374
NSN 6145-01-621-6548
NSN 6145-01-308-4879
NSN 5945-01-139-4260
NSN 5950-01-378-7042
NSN 5998-01-333-9354
NSN 6145-00-691-3609
NSN 5999-01-204-2875
NSN 5935-01-399-5500