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 6135-01-532-5410
NSN 6105-01-215-1174
NSN 5945-00-083-6778
NSN 5985-01-441-2285
NSN 7035-00-275-5604
NSN 5910-01-395-6716
NSN 5930-01-504-2236
NSN 5975-01-447-6439
NSN 5975-00-422-2760
NSN 5925-00-960-5214
NSN 6645-01-349-6632
NSN 5930-01-148-7068