The OSK™ DIN 3869 Combo Kit gives you the best of both sealing worlds — high-performance black Buna-N and green FKM profile seals, packaged together in one professional-grade 600-piece assortment. Featuring 15 critical sizes with 20 pieces of each compound per size, this dual-compound profile seal kit enables side-by-side comparison for application testing, visual identification, and compound performance evaluation.
Each profile seal is molded to DIN 3869 standards and built for ISO 1179, ISO 6149, and DIN 2353-compatible hydraulic fittings. This combo kit is ideal for shops, field repair techs, and OEMs looking to validate performance across a variety of fluid types, pressures, and temperature ranges.
Compound Comparison:
Black Buna-N (Nitrile) – General Purpose
- Excellent sealing in petroleum-based hydraulic oils, water/glycol systems, diesel, and lubricants
- Widely used in low- to medium-pressure systems
- Cost-effective, durable, and resistant to extrusion
- Not recommended for ozone, UV, or high heat over 225°F (107°C)
Green FKM (Fluorocarbon) – High Temperature & Chemical Resistant
- Superior performance in high-temperature and chemical-intensive environments
- Compatible with aggressive fuels, synthetic fluids, and elevated pressure conditions
- Perfect for carbon steel hydraulic fittings and long-life seal installations
- Visually distinct for quick identification and troubleshooting
Operating temperature ranges:
- Buna-N (Black): -40° to +225°F (–40° to +107°C)
- FKM (Green): -15° to +400°F (–26° to +204°C)
Why This Kit is a Must-Have:
- Test, identify, and compare compounds easily with side-by-side color-coded seals
- Reduce downtime by choosing the right seal the first time
- Expand sealing capabilities for both general-purpose and extreme applications
- Ideal for hydraulic service trucks, repair benches, and OEM toolkits
- All seals are 90 durometer for high pressure, low extrusion sealing performance
DIN 3869 Sealing Advantages:
DIN 3869 seals are designed for axial static applications in combination with threaded elements. These seals are commonly used in construction machinery, hydraulic presses, injection machines, fittings, hydraulic valves, and threaded tube connections across various industries.
- Functionality: The DIN 3869 profile sealing rings ensure the axial-static sealing of threaded tube connections, fittings, and sealing screws with stud ends in connection with ports.
- Performance: By tightening the screw connection, the elastomer profile sealing ring compacts, enhancing the sealing effect and preventing medium leakage, which maintains pressure and protects against contamination by dust and dirt.
- Design Benefits: The seal’s geometry minimizes mechanical deformation and protects against twisting during installation.
Kit Contents: 15 Sizes — in 2 Compounds (Total: 600 pcs)
| Product Code | ID (mm) | OD (mm) | Height (mm) | Qty (N85 Black) | Qty (F90 Green) |
|---|
| PR08 | 6.50 | 9.90 | 1.00 | 20 | 20 |
| PR10 | 8.40 | 11.90 | 1.00 | 20 | 20 |
| PR12 | 9.80 | 14.10 | 1.20 | 20 | 20 |
| PR14 | 11.60 | 16.50 | 1.50 | 20 | 20 |
| PR16 | 13.50 | 18.50 | 1.50 | 20 | 20 |
| PR17 | 14.40 | 19.80 | 1.50 | 25 | 25 |
| PR18 | 15.60 | 21.00 | 1.50 | 25 | 25 |
| PR20 | 17.50 | 23.00 | 1.50 | 25 | 25 |
| PR21 | 18.80 | 24.50 | 1.50 | 25 | 25 |
| PR22 | 19.70 | 25.80 | 1.50 | 20 | 20 |
| PR27 | 24.80 | 31.30 | 2.00 | 20 | 20 |
| PR30 | 27.80 | 34.80 | 2.00 | 20 | 20 |
| PR33 | 29.70 | 35.70 | 2.00 | 20 | 20 |
| PR42 | 38.80 | 45.80 | 2.00 | 10 | 10 |
| PR48 | 44.30 | 52.00 | 2.00 | 10 | 10 |
Why Choose OSK™ DIN 3869 Kit?
The OSK™ DIN 3869 Fluid Connector / Profile Seal O-Ring Kit is perfect for engineers and maintenance professionals who need reliable sealing solutions. The kit’s design prevents common sealing issues, such as twisting, while offering a wide range of sizes for different requirements. Made from durable nitrile, these seals provide longevity and performance, making them ideal for various industrial applications.
Applications:
- Hydraulic and pneumatic systems
- Fluid power applications
- Static sealing in machinery and equipment
Upgrade your sealing solutions with the OSK™ DIN 3869 Fluid Connector / Profile Seal O-Ring Kit and experience the quality and reliability that The O-Ring Store LLC is known for.
Why Buy from The O-Ring Store?
- ISO 9001:2015 Certified – built to meet your quality system
- Precision kits assembled in-house
- Lot traceability, custom branding, and labeling available
- COTS - TORS Certificate of Conformance Included
- Fast shipping with competitive B2B pricing
