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 5895-01-315-9019
NSN 6685-01-561-0786
NSN 5895-00-160-7660
NSN 5998-00-231-0365
NSN 5960-00-778-6167
NSN 5835-01-502-9228
NSN 5990-00-202-5127
NSN 5965-01-245-1552
NSN 5935-00-592-8894
NSN 6685-01-312-9092
NSN 5930-00-211-4316
NSN 4140-01-618-6906