GENERAL PURPOSE TUBES

The general purpose tubes and hoses are used for the general purposes which do not require high range of purity of the compound. These are mostly used in many domestic appliances and in the workshops or hobby applications because of their excellent flexibility.

MEDICAL/FOOD GRADE TUBES

These are specially designed hoses and tubes which are made in a manner so that they do not react with any medical or food material. They are sterilized in standard autoclaves in order to make them fit for the application in which they come in close contact with the food ingredients, body tissues and fluids or sensitive drugs. In this particular type of tubing the manufactured silicone tubes and hoses are completely tasteless, odorless, and non-toxic with a special property which does not support bacterial growth.

The high pressure tubes and hoses are made by strengthening their composition with wire or polyester braids which combats expansion and flattening. These tubes are mostly used when then the tubes are in direct contact with pressurized gases or suction is conducted. However, sharp edged clamps and fitting should be avoided near the tubes as they have low tensile strength and resistance to steam which may cause excessive wear and tear.

USES OF SILICONE TUBES IN THE INDUSTRIAL SECTOR

Silicone has a multiple usage in the industrial sector because of its excellent properties and types which provide a very wide area for functioning. Some of these uses are:

Styrene Butadiene Rubber Sheets, Manufacturer, Mumbai, India

Styrene-Butadiene Rubber Sheets

Styrene-Butadiene rubber (SBR) belongs to the family of synthetic rubbers that is derived from Styrene and Butadiene. The SBR exceeds all synthetic rubbers in consumption as it is very widely used in the automobile industry for the manufacture of tyres because of its excellent abrasion resistance and ageing stability. The SBR rubber was initially marketed by the name of BuNa-S because of its content concentration of Butadiene (Bu), Sodium (Na) and Styrene(S).

TYPES OF SBR:

The SBR is a polymer derived from two monomers - styrene and butadiene. The polymerization can be conducted by using two distinct processes hence two different types of SBR are produced namely S-SBR (Solution-SBR) and E-SBR (Emulsion-SBR).

PROPERTIES OF SBR

Most of the chemical and physical properties of the SBR resemble the natural rubber (NR). However, there are a few distinguishing features that make it better than the NR:

The SBR has better resistance to heat than NR; however, it has poorer tear strength and fatigue resistance in comparison to NR sheets.

It has excellent abrasion resistance, tensile strength and ageing ability when protected by additives which makes it an excellent choice for tyres in automobile industry.

Also, it is extremely flexible, tough and multifaceted adding to its properties for usage in automotive, coal mining and construction industries.

USES OF SBR

The automobile industry:

More than 50% of the automobile industry uses SBR for the manufacture of car and truck tyres.

Commercial usage:

Shoe heels and soles
Gaskets
Chewing gum
It is used as a resin to bind pigmented coatings on papers.
Speaker driver manufacturers it as a material for low damping rubber surrounds in the speakers.
Building or construction application:
Sealing and binding agent behind renders as it has the properties of extreme durability, reduced shrinkage and increased flexibility along with being resistant to emulsification in damp areas.
Used for “tanking” damp rooms or surfaces especially for basement constructions.

PROPERTY	VALUE/RATING
Durometer Range	30 – 95 Shore A
Tensile Strength Range	500 – 3,000 PSI
Elongation Range (%)	450% - 600%
Abrasion Resistance	Excellent
Adhesion to Metal	Excellent
Adhesion to Rigid Materials	Excellent
Compression Set	Good to Excellent
Flex Cracking Resistance	Good
Impact Resistance	Excellent
Resilience/Rebound	Good
Tear Resistance	Fair to Excellent
Vibration Dampening	Fair to Good

THERMAL PROPERTIES

PROPERTY	VALUE/RATING
Low Temperature Range	(-20 º F) to (-70) º F
Minimum for Continuous Use (Static)	(-60 º F)
Brittle Point	(-80 º F)
High Temperature Range	+180 º F to +220 º F
Maximum for Continuous Use (Static)	+180 º F

CHEMICAL RESISTANCE

PROPERTY	VALUE/RATING
Acids, Dilute	Fair to Good
Acids, Concentrated	Poor to Fair
Acids, Organic (Dilute)	Good
Acids, Organic (Concentrated)	Poor to Good
Acids, Inorganic	Fair to Good
Alcohol	Good
Aldehydes	Poor to Fair
Alkalies (Dilute)	Fair to Good
Alkalies (Concentrated)	Fair to Good
Amines	Poor to Good
Animal and Vegetable Oils	Poor to Good
Brake Fluids, Non-Petroleum Based	Poor to Good
Diester Oils	Poor
Ester, Alkyl Phosphate	Poor
Ester, Aryl Phosphate	Poor
Ethers	Poor
Fuel, Aliphatic Hydrocarbon	Poor
Fuel, Aromatic Hydrocarbon	Poor
Fuel, Extended (Oxygenated)	Poor
Halogenated Solvents	Poor
Hydrocarbons, Halogenated	Poor
Ketones	Poor
Lacquer Solvents	Poor to Good
LP Gases & Fuel Oils	Poor
Mineral Oils	Poor
Oil Resistance	Poor
Petroleum Aromatic	Poor
Petroleum Non-Aromatic	Poor
Silicone Oil	Poor
Solvent Resistance	Poor

ENVIRONMENTAL PERFORMANCE

PROPERTY	VALUE/RATING
Colorability	Good
Flame Resistance	Poor
Gas Permeability	Fair
Odor	Good
Ozone Resistance	Poor
Oxidation Resistance	Fair to Excellent
Radiation Resistance	PoorAnd Good
Steam Resistance	Fair to Good
Sunlight Resistance	Poor
Taste Resistance	Fair to Good
Weather Resistance	Good to Excellent
Water Resistance	Good to Excellent

STANDERD LENGTH

10 METERS

11 YARD

33 ft