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HSN/HNBR Grommet

Name: HSN/HNBR Grommet
Brand: MINERVA RUBBER & ENGINEERING WORKS

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MOQ : 2500 Pieces

HSN/HNBR Grommet Specification

Density
1.3 Gram per cubic centimeter(g/cm3)

Rubber Type
HSN/HNBR

Width
Varies by size (typically 630 mm)

Thickness
310 mm or as required

Temperature Resistance
40C to +150C (continuous), up to +165C (short-term)

Size
Customizable to application needs

Usage & Applications
Widely used for sealing, insulation, vibration dampening, and protecting wire or pipe openings in automotive, industrial, oil and gas, and electrical applications

Product Type
Grommet

Volatile Matter (%)
1%

Nitrogen Content (%)
3234%

Tolerance
0.2 mm

Resistance level
Excellent oil & chemical resistance

Flame Resistance Level
Meets basic UL 94 HB requirements (optional grades available)

Surface Finish
Smooth matte

Water Absorption
< 1% by mass

Weight
Varies with size

Hardness
705 Shore A

Diameter
10100 mm (custom sizes available)

Tensile Strength
1418 MPa

Components
Single-piece molded rubber

Length
As per specification

Compression Ratio
Optimal: 1025%

Color
Black (custom colors available)

Thermal Conductivity
Low, typical for elastomers

Part Type
Protective grommet/seal

Ash %
3%

Material
Hydrogenated Nitrile Butadiene Rubber (HNBR)

Style
Round with central hole

Natural Rubber
Not present (HSN/HNBR synthetic rubber)

Feature
High resistance to oil, fuel, chemicals and extreme temperatures

Electrical Insulation
Good, suitable for cable and wire protection

Minimum Order Quantity
As per manufacturer policy

Ozone Resistance
Excellent

Abrasion Resistance
High, suitable for dynamic applications

Manufacturing Process
Compression or injection molding

Chemical Compatibility
Resistant to aliphatic and aromatic hydrocarbons, engine oils, diesel, and greases

Elongation at Break
250% minimum

Aging Resistance
Superior; resists cracking and degradation

HSN/HNBR Grommet Trade Information

Minimum Order Quantity
2500 Pieces

Main Domestic Market
South India, Gujarat, Maharashtra

About HSN/HNBR Grommet

The Rubber Grommet is a connecting strap or ring which is installed into a specific hollow section by using a thin material which has specially developed edge to maintain proper position of the grommet. This grommet consists of a liner that can be easily inserted into the hole and an adjustable cap for the ease of cable access into the hole.

This rubber item is useful for protecting piercer product against abrasion or tear. It also prevents insulated cable, wire or lines that are passed through the penetrated object against abrasion. What is more, the grommet also comes in handy for safeguarding sharp edges of pierced object.

A high strength material like rubber is used for the fabrication of the grommet. The special modling design of this product helps to maintain its proper position to absorb vibration generated from machinery. It is generally placed between tripod and microphone or between chassis and radio for maintaining mechanical floating condition between two objects for inhibiting microphonism.

It is very common that the hole found in metal object or in any hard surface has sharp edges. These sharp edges can cut or damage rope, electrical wires, any soft material or cord which is inserted into the hole. Chances are that the electric insulation wire passed through this hole can break at its end point. It is, therefore, suggested to use plastic coated metal, rubber or plastic grommet to avert this damage. These types of grommets come in handy for shielding cable or wiring against contamination caused by water, dirt and air. The uniform and soft inner design of grommet safeguards wire against external damages.

Rubber Grommet is utilized where electrical wires go through drilled sheet metal or punched sheet metal or plastic casing to avoid possibility of damage. Edge grommets that are commonly referred as continuous and molded grommets are developed in different length and size options especially for this purpose. These types of grommets are available in single piece design that can be inserted manually to reduce spreading of vibration. These are extensively used for easy mounting of computer disk drives that are prone to vibration or for machinery sensitive to vibratory effect. The screws of these equipments that goes through grommet absorbs sounds produced from the chassis. Grommet is truly useful for sound insulation of electronic circuit parts that are prone to microphonism occurred due to vibration. Its presence can be noticed in data transferring cabinets, bushes with good acoustic properties, dense and complex cable or wire, telecom switches, medical devices, automobiles and in hydraulic tube used in aircraft designing.

Superior Abrasion Resistance

Engineered for dynamic environments, the HSN/HNBR grommets deliver outstanding abrasion resistance. This makes them ideal for applications that require durability and longevity, even under constant movement or exposure to harsh surfaces. The materials tough properties ensure consistent performance and protection throughout its service life.

Customized for Your Application

Our grommets come in various sizes, diameters (10100 mm), and thicknesses (310 mm), with custom designs available to fit specific requirements. Whether sealing pipe openings or protecting electrical wires, each product can be tailored based on application suitability and manufacturer guidelines, ensuring precise fit and efficient function.

Exceptional Chemical and Thermal Stability

HSN/HNBR grommets offer superior resistance to aggressive chemicals, oils, fuels, and extreme temperatures ranging from 40C up to +150C continuously. This reliability assures safe use in challenging industrial and automotive conditions, reducing maintenance and downtime due to material degradation.

FAQs of HSN/HNBR Grommet:

Q: How does the HSN/HNBR grommet provide protection for cables and wires in dynamic applications?

A: HSN/HNBR grommets ensure excellent abrasion resistance and electrical insulation, guarding cables and wires against physical wear, vibration, and environmental exposure. Their durable synthetic rubber material withstands movement and impacts, maintaining reliable protection in automotive and industrial settings.

Q: What types of chemicals and fuels are these grommets compatible with?

A: These grommets exhibit high resistance to aliphatic and aromatic hydrocarbons, engine oils, diesel, greases, and a range of industrial chemicals. Their hydrogenated nitrile butadiene composition prevents degradation when exposed to such substances, making them suitable for oil and gas, as well as automotive uses.

Q: When should I specify HSN/HNBR grommets over other sealing materials?

A: HSN/HNBR grommets are ideal when superior abrasion, ozone, aging, and chemical resistance are required, especially in dynamic, high-temperature, or chemically aggressive environments. Choose these grommets for applications demanding durable, long-lasting, and low-maintenance seals with excellent electrical insulation.

Q: Where are HSN/HNBR grommets commonly installed within the automotive and industrial sectors?

A: They are widely used to seal and protect openings where wires, cables, or pipes pass through panels, engines, or housings, and where vibration dampening is critical. Typical locations include electrical enclosures, machinery, vehicle bodies, and oil or fuel system interfaces.

Q: What is the recommended manufacturing process for these grommets?

A: HSN/HNBR grommets are manufactured using either compression or injection molding methods, depending on the required size and design complexity. Both processes ensure precise dimensional tolerances and optimal physical characteristics for high-performance sealing and protection.

Q: How can I benefit from using HSN/HNBR grommets in my project?

A: Utilizing HSN/HNBR grommets offers extended service life, reduced maintenance costs, and enhanced safety due to their resistance to abrasion, chemicals, extreme temperatures, and ozone. Their customizable design adapts easily to specific requirements, ensuring a reliable fit and consistent performance.

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