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 6130-01-266-3501
NSN 6150-01-462-6434
NSN 6645-01-062-0905
NSN 6130-01-005-2205
NSN 6130-00-774-3231
NSN 5960-00-834-7136
NSN 5996-01-356-7002
NSN 5975-00-185-5243
NSN 6150-01-426-7430
NSN 6685-01-622-7891
NSN 5996-01-562-0855
NSN 6685-01-420-6480