Overview
The RT Dygert 1KPL4 443N70 is a bulk pack of 10 Buna-N O-rings manufactured to AS568 size 443 specifications. These nitrile rubber seals are engineered for general-purpose sealing in industrial machinery, hydraulic systems, and mechanical assemblies. Buna-N (nitrile) is the industry standard for cost-effective sealing with excellent performance across a wide temperature and pressure range.
Key Features
- AS568 size 443 O-ring dimension standard
- Buna-N (Nitrile) 70 durometer material for durability and flexibility
- Lot of 10 rings—ideal for maintenance stocking and repair applications
- Oil and fuel resistant for hydraulic and industrial use
- New in box condition, ready to deploy
Technical Specifications
- Material: Buna-N (Nitrile / NBR) 70 Durometer
- Size Standard: AS568 443
- Inside Diameter: 7.475 inches
- Cross Section: 0.275 inch
- Color: Black
- Quantity: 10 pieces
- Temperature Range: −40°F to +212°F (typical for Buna-N)
- Fluid Compatibility: Oils, fuels, water, general industrial fluids
Typical Applications
Buna-N O-rings are used across industries for:
- Hydraulic pump and motor sealing
- Pneumatic cylinder rod seals
- General machinery and equipment shaft seals
- Fuel and lubricant system seals
- Maintenance and repair kits for OEM equipment
- Prototype and engineering test assemblies
Compatibility & Replacements
Compatible With
- ISO 3384 and ASTM D1869 standard hydraulic and pneumatic equipment
- Industrial machinery requiring AS568 standard seals
- Fuel systems and oil circulation loops
- Standard O-ring grooves and gland designs
Replaces / Drop-In Replacement For
- Other AS568 size 443 Buna-N 70 durometer O-rings
- Generic nitrile seals in equivalent size and durometer rating
Works With
- ISO 6072 O-ring measurement and inspection standards
- ASTM D2000 elastomer classification systems
- Standard O-ring groove design per ISO 3384
- Hydraulic and pneumatic component suppliers
