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 5998-01-184-0264
NSN 6135-00-050-7189
NSN 6135-01-606-0596
NSN 6130-01-106-3410
NSN 7035-01-408-8698
NSN 2925-01-517-8544
NSN 5998-01-476-3639
NSN 6610-00-739-5096
NSN 5925-00-471-4635
NSN 7035-00-286-6221
NSN 7035-00-155-9513
NSN 6240-01-327-3239