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 5990-00-578-8850
NSN 6150-01-204-4165
NSN 5960-01-498-9427
NSN 5910-00-170-3936
NSN 6145-00-798-4831
NSN 5945-00-147-9936
NSN 5895-01-284-8308
NSN 5935-01-148-7881
NSN 6620-01-290-8209
NSN 6135-01-066-3469
NSN 5960-00-656-2451
NSN 6110-01-660-8979