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 6150-01-042-7340
NSN 5915-01-585-7676
NSN 6110-01-575-5104
NSN 6685-01-219-9754
NSN 5999-00-248-9139
NSN 6240-00-156-1607
NSN 5985-00-007-7665
NSN 5965-01-461-4480
NSN 6145-00-838-6996
NSN 6240-01-558-2221
NSN 5990-00-518-3195
NSN 5895-00-558-9032