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 5999-00-009-5877
NSN 5996-01-102-3072
NSN 5985-00-189-0953
NSN 5930-00-730-1285
NSN 6685-01-302-4242
NSN 5925-01-644-9636
NSN 5905-00-360-4094
NSN 5990-01-094-6826
NSN 6135-01-458-3851
NSN 2925-01-299-6967
NSN 5895-00-735-2273
NSN 5996-01-445-7547