Product Specifications

Category	Item	Details
Basic Parameters	Material Name	Hydrogenated Nitrile Butadiene Rubber (HNBR)
	Hardness Range	60–90 Shore A (Standard: 70±5)
	ACN Content	Approx. 36%
	Reinforcement System	Carbon Black Filled
	Curing System	Peroxide / Sulfur System
Mechanical Properties	Tensile Strength	≥16 MPa
	Elongation at Break	≥250%
	Compression Set (150°C × 70h)	≤30%
Execution Standards	International General Standard	ISO 3601
	Aerospace Standard	AS568
	ASTM Standard	ASTM D2000 M2BG 710

Why Choose This Product?

Performance Comparison

Performance Metric	NBR	HNBR	FKM
Temperature Range	-65~150°C	-40~150°C	-45~300°C
Oil Resistance	Medium	High	High
Aging Resistance	Low	High	High
Mechanical Strength	Medium	High	Medium
Extrusion Resistance	Medium	High	Medium

Application Matching

Operating Condition	Recommended Material	Notes
Standard Oil/Water Sealing	NBR	General-purpose, cost-effective solution
Hydraulic / Engine Systems	HNBR	Optimal balance of temperature, oil, and pressure
High-Temp Chemical Environments	FKM	Priority on high-temperature stability
High Pressure with Large Gaps	HNBR	Superior extrusion resistance

Failure Modes

Incorrect Selection	Potential Consequence	Typical Failure Symptom
Using NBR in high-temp engines	Accelerated material aging	Hardening, cracking, leakage
Using NBR in high-pressure hydraulics	Insufficient extrusion resistance	O-ring extrusion damage
Using FKM in low-cost systems	Excessive cost	Over-engineering, poor cost-performance
Ignoring media compatibility	Material swelling	Seal failure, volume expansion

Material Positioning

HNBR combines three capabilities that neither NBR nor FKM offers alone: oil resistance + aging resistance + extrusion resistance at 150°C continuous service. For hydraulic and engine systems, this combination makes it the recommended material over both alternatives.

Product Advantages

Material Stability

Maintains elasticity from -40°C to 150°C.

Resists thermal aging, preventing hardening and cracking.

Ensures dimensional stability in oil media.

Sealing Performance

Provides continuous sealing at 10%–30% compression.

Retains contact stress during pressure cycling.

Minimizes leakage from long-term compression set.

Mechanical Adaptability

Excellent rebound in standard grooves.

High extrusion resistance in medium/high-pressure systems.

Compatible with metal and non-metal interfaces.

Problem-Solving Capabilities

Prevents NBR high-temp aging failures.

Stops pressure-cycling leaks in hydraulics.

Eliminates dimensional instability from fuel swelling.

Resolves permanent deformation in static seals.

FAQ

Q1: How are the products packaged?

A: Standard packaging consists of industrial-grade individual sealed bags, reinforced with outer cartons or woven bags for safe transit. Each batch is clearly labeled with specifications, material type, and production batch number to ensure full traceability.

Q2: What is the lead time?

A:Standard in-stock sizes: Shipped within 1–3 days.Custom non-standard sizes: Production takes 5–7 days.(Exact lead time depends on specific dimensions and order quantity.)