Langina 195pcs ORS/ORFS Hydraulic O-Ring Kit, 8Sizes BN-90A ORFS Flat O-Rings, ORS Hydraulic Sealing O Rings, Buna 90 Nitrile Rubber Sealing Kit for Flat Face Fittings and Hydraulic Hose Fitting — Open-Box, 36% Off

195-Piece Multi-Size Assortment : This ORFS O-ring kit comes with 195 Buna 90 nitrile O-rings in a wide range of sizes, eliminating the hassle of purchasing individual O-rings and ensuring you have the perfect fit for various hydraulic fitting repairs and maintenance tasks.

Durable Buna 90 Nitrile Material: Crafted from premium Buna-N 90 rubber, these flat face hydraulic o-rings deliver exceptional resistance to oils, fuels, and hydraulic fluids. Boasting superior wear resistance and sealing performance, they are ideal for high-pressure systems and heavy-duty industrial environments

Leak-Proof Flat Face Design for ORFS Fittings: Engineered specifically for ORFS (O-Ring Face Seal) hydraulic connections, the flat face structure creates a tight, reliable seal when paired with compatible fittings. It effectively prevents leaks even under intense pressure, perfect for demanding hydraulic applications

Organized & Portable Storage Case: All O-rings are neatly arranged in a sturdy plastic storage box, keeping each size separated and easy to access. This thoughtful design prevents loss or mixing, allowing you to quickly find the right O-ring during repairs, whether you’re working in a garage or on a job site

Versatile for Professionals & DIY Enthusiasts: Suitable for both professional mechanics maintaining industrial machinery, trucks, and construction equipment, and DIY hobbyists tackling hydraulic system projects. This kit offers broad compatibility with ORFS hydraulic systems for all your sealing needs

8 Sizes: The thickness of all this ORFS O rings is 1.78mm,the ID and OD are as follows (mm): #4 (OD:11.21 ID:7.65,for1/4" Flat Face), #6 (OD:12.81 ID:9.25 for3/8" Flat Face), #8 (OD:15.98 ID:12.48,for 1/2" Flat Face), #10 (OD:19.16 ID: 15.6,for 5/8" Flat Face), #12 (OD:22.33 ID: 18.7,for 3/4" Flat Face), #16(OD:27.08 ID:23.52,for 1" Flat Face), #20 (OD:33.43 ID: 29.87,for 1-1/4" Flat Face), #24 (OD: 41.38 ID:37.82,for 1-1/2" Flat Face)

This O-Ring kit is high quality Buna 90 rubber O-Rings that has all the sized that you need for marine and home use.The material consistently resists swelling and degradation, even when exposed to saltwater, oils, and temperature fluctuations common in marine environments. Whether sealing hydraulic fittings or repairing household plumbing, each O-ring delivers a secure, long-lasting fit. For anyone maintaining boats, machinery, or fluid systems, this kit offers peace of mind through reliability and breadth of coverage. These o-rings seem to be well made and feel fairly hard and tough (expected for hydraulics). I don't see any notable mold flash or lines on them. The case is decent, although all the o-rings were mixed up from shaking around in transit, so it's not the best at keeping them separated. Overall, decent for the money. Having this ORFS/ORS flat o-rings kit saves you money because these O-rings are much less expensive than at the hardware store and you don't have to stop what I am doing to make a trip to town. If you do any hydraulic work you need this kit—especially when downtime means lost productivity. Having the right O-ring on hand at the exact moment you need it keeps repairs quick and efficient