(Viton/Fkm 90-160 Pc. Kit) Captain O-Ring - Orb Boss Hydraulic, Ring Seal Kit. Captain O-Ring's 160 Piece BOSS Hydraulic VT90 O-Ring Kit includes 12 sizes and 160 total o-rings. The kit includes o-ring sizes 904, 905, 906, 907, 908, 909, 910, 911, 912, 913, 914, 916 which are used to seal straight thread tube fittings (BOSS Type) found in hydraulic equipment. This kit contains o-rings made of 90 durometer Flouro-Elastomer (also called FKM, Viton, or VT90) material. VT90 is the top shelf o-ring material used in BOSS seal applications due to its resistance to many hydraulic fluids and its flexability/sealability in low temperatures. The included size chart on the front of the kit makes sizing up o-rings quick and effortless. O-Rings are conveniently sorted by size in a shatterproof Flambeau divider box. Includes: -904 (20 pieces) -905 (20 pieces) -906 (20 pieces) -907 (15 pieces) -908 (15 pieces) -909 (10 pieces) -910 (10 pieces) -911 (10 pieces) -912 (10 pieces) -913 (10 pieces) -914 (10 pieces) -916 (10 pieces) What to expect: This item includes 255 O-Rings in a Flambeau plastic divider case with "Captain O-Ring" branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC. Product Features Includes o-rings made of 90 durometer Flouro-Elastomer (also called FKM, Viton, or VT90) material. Includes all sizes between -904 to -916 Used in sealing straight thread tube fittings (BOSS Type) in hydraulic equipment Manufactured and Warrantied by Captain O-Ring LLC, with decades in a sealing and chemical industry Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!