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 6240-00-476-6916
NSN 6645-00-583-0066
NSN 5975-01-247-6442
NSN 6620-01-327-4111
NSN 6145-01-564-7704
NSN 5985-00-476-8271
NSN 5905-01-403-2806
NSN 4140-01-318-7540
NSN 5965-00-170-5254
NSN 5895-01-577-7515
NSN 6610-00-296-5007
NSN 5895-01-004-9050