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 6645-00-928-7208
NSN 5925-00-009-9818
NSN 6610-00-468-1958
NSN 5996-01-487-7323
NSN 5895-01-157-2714
NSN 6135-01-578-1148
NSN 5925-01-240-4048
NSN 6220-00-461-1494
NSN 6320-01-056-1164
NSN 6105-00-842-8069
NSN 6610-00-845-1070
NSN 5975-01-300-1548