Description
Standard 436-piece AS568 O-ring assortment, reference part number 568-KIT. The published specification lists NBR (Buna-N) O-rings in 70 Shore A durometer across 36 sizes.
Product Specifications
| Product Type | O-Ring Assortment Kit |
| Reference Part Number | 568-KIT |
| Piece Count | 436 O-rings |
| Size Standard | AS568; 36 sizes |
| Material | Nitrile rubber (Buna-N / NBR) |
| Durometer | 70 Shore A |
Published Size Distribution
- 25 each: dash sizes 005–011
- 15 each: dash sizes 012 and 110
- 10 each: dash sizes 013–018, 111–116, and 210–211
- 7 each: dash sizes 117–121 and 212–219
Temperature note: The manufacturer lists an approximate operating range of -30°F to +250°F for medium-hardness compounds around 70 durometer; actual limits depend on the compound and service conditions.
Fitment note: Confirm the required dash size, cross-section, compound and operating conditions before installation. This assortment is not a model-specific cylinder seal kit.

