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 6240-00-403-9849
NSN 6685-01-473-9026
NSN 5895-01-391-7724
NSN 5925-01-279-4415
NSN 6130-01-383-0416
NSN 6240-01-501-9338
NSN 6645-01-411-5657
NSN 5965-01-200-6613
NSN 5999-01-327-3005
NSN 5998-01-090-4071
NSN 6620-00-652-0926
NSN 5975-01-655-0524