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 6685-01-569-7986
NSN 5920-00-598-0469
NSN 5905-01-157-9611
NSN 6220-00-911-7313
NSN 5999-00-228-2317
NSN 5910-01-345-0923
NSN 5985-01-333-3058
NSN 5985-00-190-5716
NSN 5985-01-508-1238
NSN 5925-00-814-4088
NSN 7035-00-535-8109
NSN 6240-00-450-0675