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[China]
Trade Verify
Address: 5F, No.200 Guoding Road, Shanghai China 201105
Contact name:Sophia Lau
Hongum Technology (Shanghai) Co., Ltd |
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Verified Suppliers
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Nitrile Rubber Diaphragm Seals Molded Buna-N Gaskets Compression
Molding Transfer Molding Rubber Injection Molding
Introduction:
Hongum specializes in precision die cut and molded nitrile (buna-n)
rubber gaskets and seals for applications and industries worldwide.
Nitrile rubber, also known as Buna-N and NBR, is the most widely
used elastomer for gaskets and seals. Its properties provide
excellent resistance to oils, solvents, gasoline, and petroleum
based fluids. Due to its resilience, nitrile is used in
applications requiring resistance to extreme hot and cold
temperatures, abrasion, water, and gas permeability. Nitrile rubber
functions well in temperatures ranging from -40°F to +212°F,
intermittent to +230°F.
The main products of rubber sealing gaskets are: silicone pads,
nitrile rubber pads, fluorine rubber pads, and other rubber pads.
Die Cut Nitrile (Buna-N) Gaskets
Hongum provides die cut nitrile gaskets in a wide variety of
grades, thicknesses and hardness. The standard thickness of nitrile
rubber ranges from 1/64″ to 1/4″ thick. Nitrile rubbers hardness
(durometer) generally ranges from 30 to 90 durometer, Shore A. Die
cut nitrile gaskets are black in color however our FDA (Food Grade)
nitrile gaskets are also offered in white. Nitrile gaskets are
available with or without pressure sensitive adhesive (PSA)
backing.
Molded Nitrile, Buna-N Gaskets (NBR)
Hongum specializes in molded nitrile gaskets and seals. Our custom
nitrile molding capabilities include Compression Molding, Transfer
Molding, and Rubber Injection Molding. Nitrile (NBR) compounds are
available from 40 to 90 durometer, Shore A. Molded nitrile gaskets
are usually black in color, however custom color compounding is
available. Food Grade “FDA Approved” Nitrile (NBR) and Hydrogenated
Acryonitrile (HNBR), also referred to as Highly Saturated Nitrile
(HSN), are also universal molding compounds that are frequently
used. Nitrile rubber molding tolerances are compliant with rubber
molding industry standard RMA A2 Precision tolerances.
Available Nitrile Grades
Commercial Grade Nitrile (Buna-N)
Mid Grade Nitrile
High Grade Premium Nitrile (Buna-N)
FDA White Nitrile (Buna-N)
Transformer Oil Nitrile (Buna-N)
Bio-Diesel Nitrile (Buna-N)
Nitrile (Buna-N) Sponge
NBR Material:
NBR has excellent oil resistance. The trans form accounts for about
78% of the typical NBR structure. Due to the cyano group in the
molecular chain structure of NBR, oil resistance (such as
resistance to mineral oil, liquid fuel, animal and vegetable oils
and solvents) is better than natural rubber, neoprene and
styrene-butadiene rubber. Compared with other rubbers, NBR has a
wider range of service temperature. Its long-term service
temperature is 120°C. At the same time, NBR has good low
temperature resistance, and the lowest glass transition temperature
can reach -55°C.
When choosing a gasket material, there are several factors to keep in mind to ensure the one chosen is appropriate for the intended application. Some of the key considerations are:
| Temperature: | what temperature range is it expected to withstand? |
| Pressure: | what pressure range is it expected to withstand? |
| Media: | what materials will it be exposed to? (e.g., are the process fluids abrasive or corrosive?) |
| UV and ozone exposure: | will it be exposed to UV radiation and ozone? |
| Product standards: | is it subject to any industry-specific product requirements? (e.g., does it need EMI shielding properties?) |
| Industry standards: | is it subject to any other industry-specific standards? (e.g., does it need to meet ASTM, UL, or Mil-spec requirements?) |
Our service:
1. Packaging is neutral packing or customized packing.
2. We will reply you within 24 hours.
3. We will also provide you with good after-sales service.
4. OEM or ODM orders are welcomed.
5. Trial orders are acceptable.
6. High quality and factory price.
7. 100% ensured the quality.
