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 5895-00-221-1315
NSN 6150-01-085-9386
NSN 5999-01-391-3534
NSN 5925-00-706-9975
NSN 5990-01-395-4194
NSN 6145-01-083-0866
NSN 6320-00-036-3688
NSN 6135-00-027-3914
NSN 6145-00-003-1812
NSN 5855-01-461-8169
NSN 5990-01-206-3606
NSN 6130-00-814-5888