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 6145-00-374-9237
NSN 4140-01-400-3610
NSN 5925-01-434-7483
NSN 4140-01-046-8196
NSN 5930-01-108-0114
NSN 2925-00-033-4621
NSN 5835-01-440-5391
NSN 7035-00-421-8710
NSN 6135-01-068-0119
NSN 5985-01-501-0003
NSN 6320-01-651-7476
NSN 5915-01-498-1495