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 6110-00-758-2051
NSN 4140-01-451-2779
NSN 6320-01-292-6635
NSN 6320-01-466-4175
NSN 6645-01-562-1351
NSN 5985-01-510-8495
NSN 6610-00-853-3874
NSN 6645-00-766-7935
NSN 4140-01-131-3124
NSN 6240-00-893-4799
NSN 5965-00-546-4402
NSN 5996-00-249-8956