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 5930-00-287-0983
NSN 6685-00-432-7807
NSN 6130-01-168-6219
NSN 6130-01-496-4008
NSN 6320-00-369-7796
NSN 5996-01-395-6608
NSN 5895-01-407-7073
NSN 2925-00-770-4713
NSN 5999-01-094-4883
NSN 6685-00-410-0603
NSN 5950-01-385-3490
NSN 6645-01-304-4308