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Steel Mill

Max Spare with its wide range of seal profiles and elastomers is fully capable of serving Iron & Steel Industries.

Acrylonitrile Butadiene Rubber (NBR)

Hardness Max Spare Code
NBR 70°/75° Shore 'A' NT4/b
NBR 80°/85° Shore 'A' NT5/b
NBR 90°/95° Shore 'A' NT6/b

Commonly known as NITRILE or BUNA-N.

Nitrile rubber is the sealing material most frequently used in Hydraulic & Pneumatic systems because of its excellent resistance to mineral oil based fluids, greases, water & hydrocarbon fuels. It has good physical characteristics such as abrasion resistance and good compression set.

NBR is not suitable to Aromatic hydrocarbons, chlorinated hydrocarbons, automotive brakes fluids, and some fire resistant hydraulic fluids.

Fluoro Rubber (FPM)

Hardness Max Spare Code
FPM 70°/75° Shore 'A' VT2/b
FPM 80°/85° Shore 'A' VT3/b
FPM 90°/95° Shore 'A' VT4/b

FPM Rubber is commonly known by DU PONT trade name VITON. The main characteristics of FPM are that it is resistant to high temperature & their chemical stability. Also displays minimal weight loss in high vacuum & also, its permeability to gases is low.

VITON is compatible to fire resistant Hydraulic fluids, hot oils, greases, hydrocarbon, chlorinated hydrocarbons & most organic acids, even at high concentrations and with / against a number of organic compounds. It has excellent resistance to hot water and to steam.

FPM, however is not resistant to methanol, keytones, esters and ethers.

Hydrogenated Acrylonitrile Butadiene Rubber (HNBR)

Hardness Max Spare Code
HNBR 70°/75° Shore 'A' NT42/a
HNBR 80°/85° Shore 'A' NT42/b
HNBR 90°/95° Shore 'A' NT34

HNBR has good heat resistance, oil resistance & resistance to number of aggressive chemicals. The material exhibits high mechanical strength and improved abrasion resistance. It also has superior resistance to weathering, ozone and hot air and very good resistance to technical oils, even in the presence of hydrogen sulphide and amines.

HNBR with PTFE Filler

Hardness Max Spare Code
HNBR 80°/85° Shore 'A' NT34/b

This specially developed compound is very good for low friction and low abrasion resistance. Mostly this material are used for seals subjected to dry run.

Polyurethane (PUX)

Hardness Max Spare Code
92° PUX

PUX material is a special grade polyurethane capable to withstand temperature upto +110 C, compared to normal grade PU material. Besides temperature resistance it exhibits good wear & tear properties, abrasion resistance, extrusion strength and good flexibility.

Polyamide (Nylon)

Hardness Max Spare Code
M 95° NY-X

NY-X grade polyamide have capability to withstand temperature upto +290°C compare to other grade polyamide. It has good slide and wear characteristics. The materials are continually resistant to solvents, grease, fuels, oils and acids. Strong acids, alkalis and hot water attack polyamide.

Note: The Information given on this page are based on our many years of experience in this field. But still some of the information may vary according to the process applications. Thus maxspare is geared up to cater sealing requirement for new applications.