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 6135-01-506-4791
NSN 2925-00-925-0545
NSN 5915-01-020-9595
NSN 5895-01-231-9292
NSN 5945-01-534-6123
NSN 5915-01-451-3588
NSN 5998-01-238-9139
NSN 6240-01-206-7882
NSN 7035-01-339-3665
NSN 5945-01-157-9781
NSN 2925-01-426-3410
NSN 6320-01-442-8604