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 6220-01-106-7845
NSN 2925-01-118-6125
NSN 6145-01-068-1950
NSN 5965-01-444-1322
NSN 5985-01-429-9207
NSN 5915-01-503-6985
NSN 7035-01-145-5059
NSN 5930-01-103-8336
NSN 5925-00-724-4388
NSN 5950-01-553-8515
NSN 6135-00-973-5632
NSN 6130-01-315-9317