Description

Nitrile Rubber, Hydrogenated CAS NO 308068-83-9 is a high-performance elastomer produced by the selective hydrogenation of standard nitrile rubber (NBR), which significantly improves its resistance to heat, ozone, and chemicals. This modification is critical for applications requiring long-term durability in harsh environments where standard NBR would degrade. It is an essential material for manufacturers in the automotive, oil & gas, and industrial sealing sectors seeking enhanced reliability.

Application

• Automotive Seals & Hoses: Used in fuel systems, power steering hoses, and coolant hoses due to excellent resistance to heat, oils, and ozone.
• Oil & Gas Industry Components: Ideal for seals, gaskets, and packers in downhole applications, offering superior resistance to sour gas (H2S), amines, and high temperatures.
• Industrial Rollers & Belts: Employed in printing, paper, and steel mills where exposure to heat, oils, and cleaning solvents is common.
• Durable Sealing Solutions: For aerospace and heavy machinery, providing reliable performance in dynamic and static seals under extreme conditions.
• Medical and Food-Grade Tubing: Certain highly purified grades can be formulated for applications requiring low extractables and compliance with relevant regulations.
• Vibration Damping Mounts: Used in equipment requiring consistent performance despite exposure to lubricants and elevated temperatures.

Basic Information

Product Name	Nitrile Rubber, Hydrogenated
CAS No.	308068-83-9
Molecular Formula	(C4H6·C4H6N)x
Molecular Weight	Varies by grade and acrylonitrile (ACN) content
Synonyms	Hydrogenated Nitrile Butadiene Rubber; HNBR; HSN; Highly Saturated Nitrile Rubber; Therban® (Arlanxeo); Zetpol® (Zeon); H-NBR; Hydrogenated NBR
EINECS	Contact for details

Quality Control

Our Hydrogenated Nitrile Rubber is manufactured under a stringent quality management system. Each batch is tested for critical parameters including acrylonitrile content, degree of hydrogenation, Mooney viscosity, and residual metal content to ensure consistent performance and batch-to-batch uniformity. Certificates of Analysis (COA) detailing these specifications are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, excessive heat, and direct sunlight to maintain the polymer's properties. For long-term storage, a nitrogen blanket is recommended to prevent premature aging.

Specification

Item	Specification
Appearance	Off-white to pale amber crumbs or bale
Acrylonitrile Content	17% - 50% (Typical grades: 34%, 39%, 44%)
Degree of Hydrogenation	>96% (Typical range: 96% - 99.9%)
Mooney Viscosity (ML 1+4 @ 100°C)	30 - 120
Specific Gravity	0.94 - 1.00
Ash Content	< 1.0%
Volatile Matter	< 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.