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 5835-00-433-0170
NSN 6110-00-553-8816
NSN 5930-01-253-6128
NSN 6135-01-026-9960
NSN 5925-01-649-1057
NSN 6645-00-204-4100
NSN 6220-01-315-4522
NSN 6105-01-204-7176
NSN 6240-01-468-8407
NSN 6240-01-641-9347
NSN 2925-01-535-7235
NSN 5915-01-581-9472