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 6145-01-299-4783
NSN 4140-01-464-4445
NSN 5895-01-070-2701
NSN 6645-01-162-8023
NSN 5905-00-115-0910
NSN 7035-01-625-5680
NSN 5985-01-271-6107
NSN 6320-01-575-6342
NSN 6320-00-646-3311
NSN 5895-01-023-8446
NSN 5950-01-234-6013
NSN 5835-01-442-6482