Products Description

Hydraulic boss O-rings, also known as O-ring bosses (ORBs), are specialized seals used primarily in hydraulic applications. They are designed to seal straight-thread pipe fittings, providing a reliable barrier to fluid leaks.

Hydraulic-Boss-O-Rings

Features

Design: Hydraulic boss O-rings are typically made of elastomeric materials, such as Buna-N and EPDM, with varying durometers (hardness levels). These O-rings are most commonly found at 90 durometers.

Function: These O-rings are used with boss fittings, which have cylindrical protrusions that provide a flat sealing surface. This design allows for a more effective seal than tapered threads alone.

Standard Sizes: Hydraulic boss O-rings are available in 20 standard sizes. For example, size -903 is for 3/16-inch tubes. The size is based on the outer diameter of the tube.

Applications: These O-rings are commonly used in hydraulic systems in a variety of industries, including agriculture, construction, and automotive, and are critical for maintaining pressure and preventing leaks in hydraulic circuits.

Wide temperature range: Hydraulic boss O-rings can work in different temperature ranges. For example, in hydraulic systems, they can work normally in the temperature range of -35°C to +100°C, while in pneumatic systems, they can work in the temperature range of -35°C to +80°C.

TECHNICAL INFORMATION
Common Names	Nitrile, BUNA-N, NBR
Durometer Range (Shore A)	45-95
Low Temperature Usage (Fº)	30º to -40º
High-Temperature Usage (Fº)	to 250º
Tensile Range (P.S.I)	200 – 3000
Oil Resistance	Good to Excellent
Compression Set	Good
Abrasion Resistance	Excellent
Tear Resistance	Good
Elongation (max. %)	600
Resilience – Rebound	Good
Aging Weather – Sunlight	Poor
ASTM D-2000 Classification	BF, BG, BK

Linde Polymer Tec Co., Ltd

Linde Polymer Technology Co., Ltd. mainly produces various rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 specifications of products. The products suit automobiles, aviation, machinery, petrochemicals, sanitary ware, medical, food, electronics, defense, military, industry and other fields. Since the establishment of the factory, the company has completed process consistency operations and the product yield rate has reached 97.1%.