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 2925-01-550-0177
NSN 5855-01-158-2709
NSN 2925-01-513-9114
NSN 5990-01-007-3806
NSN 2925-01-218-5556
NSN 7035-00-631-3782
NSN 5835-01-366-5907
NSN 5905-00-763-8734
NSN 5910-01-206-7264
NSN 5930-01-348-8962
NSN 6320-01-190-1397
NSN 5895-01-305-3433