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 5895-01-478-2566
NSN 5985-01-215-8993
NSN 2925-00-973-9413
NSN 5960-00-401-0794
NSN 4140-00-078-9357
NSN 6685-01-214-4626
NSN 6320-00-456-0836
NSN 6240-01-261-2861
NSN 5999-01-332-2879
NSN 6240-00-824-4271
NSN 5895-01-429-1255
NSN 5975-01-087-9650