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 5996-01-307-1351
NSN 5965-01-028-6206
NSN 6145-00-150-5049
NSN 5985-00-887-1451
NSN 2925-00-653-7432
NSN 5996-00-762-0695
NSN 6645-01-330-2616
NSN 6145-00-069-8964
NSN 6240-01-226-2902
NSN 5935-00-902-4673
NSN 5835-00-148-9719
NSN 6150-00-244-5044