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 5915-01-172-9864
NSN 2925-01-302-8591
NSN 6650-01-049-1881
NSN 6130-00-375-6299
NSN 5905-01-428-7774
NSN 5965-01-566-9024
NSN 5925-01-139-5372
NSN 5895-01-100-3227
NSN 5905-01-525-9803
NSN 6685-00-139-5713
NSN 6145-00-318-9206
NSN 6135-01-180-9611