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National O-Ring Service Kit OK 311 Assortment Rubber O-Rings Metal Case Red:
$42.74
Vintage National O-Ring Service Set Kit No. OK 311 containing an assortment of black rubber O-rings organized in a red metal case with molded size compartments and a printed size chart. The case shows surface scratches, wear and a hairline crack by one lower compartment; several rings appear used or missing. Useful for plumbing, automotive seal replacement and general maintenance. Inspect rings before installation and store in a cool dry place.Vintage National O-Ring Service Set Kit No. OK 311 containing an assortment of black rubber O-rings organized in a red metal case with molded size compartments and a printed size chart. The case shows surface scratches, wear and a hairline crack by one lower compartment; several rings appear used or missing. Useful for plumbing, automotive seal replacement and general maintenance. Inspect rings before installation and store in a cool dry place.
