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 5960-01-027-8833
NSN 6685-01-196-6082
NSN 6610-01-214-6680
NSN 6110-01-441-7727
NSN 6220-01-012-0803
NSN 6150-00-256-3930
NSN 6650-00-168-1502
NSN 6135-00-056-6863
NSN 6220-01-446-6430
NSN 6685-01-250-2408
NSN 5999-01-529-9689
NSN 5996-00-225-3286