Description
SUMITOMO 321 PCS O-Ring Assortment Box is listed as an O-ring assortment box with 321 pieces. The current catalog record identifies it with SKU SUMITOMO-321-NBR. Exact supplier packing contents have not been independently verified for this listing.
Product Specifications
| Product Type | O-Ring Assortment Box |
| Listed Piece Count | 321 |
| Catalog Listing | SUMITOMO 321 PCS O-Ring Assortment Box |
| SKU | SUMITOMO-321-NBR |
| Material Code | NBR (SKU designation; verify with supplier) |
| Size Standard | Not verified in the current supplier documentation |
| Durometer / Hardness | Not independently verified for this listing |
| Individual Size Schedule | Not available in the current product record; confirm the supplier packing list |
Selection Guidance
The SKU ends in NBR, which is a listing code rather than independent proof of the supplied compound. Confirm the actual compound and hardness with the supplier. Before installation, verify the O-ring inside diameter, cross-section, hardness, compound, working fluid and temperature range against the equipment service specification.
Compatibility Note
The current listing does not contain a verified item-by-item size schedule or a confirmed machine-model fitment list. A brand name in the catalog title is not, by itself, proof of OEM manufacture or guaranteed fitment. Confirm the required sizes and quantities with the supplier before ordering.