Hard Natural Rubber (SEMI and EBONITE)
Better chemical and heat resistance than soft natural rubber. Wide application in organic and inorganic acids and chlorine gas. Specific grades have excellent permeation resistance and heat resistance.
Advantages
- Moderate cost
- Ease of application and repair
- Ease of cure
- Excellent chemical and permeation resistance
- Heat resistance up to 200°F (93°C)
Considerations
- Not oil resistant
- Not flame resistant
- Subject to damage by cold weather exposure or sudden extreme temperature changes
Types:
- Semi-hard
- General purpose Ebonite
- FDA compliant and electroplating tank Ebonite (no graphite)
- Chlorine and hot brine resistant Ebonite (graphite)
Uses:
- Chemical process tanks, agitators, mixers, pumps, fans, water treatment columns
- Plating tanks (nickel, copper, cadmium)
- Pipe and fittings
- Pickling tanks
Do not use:
- For chrome plating tanks
- For nitric or hydrofluoric acid
- Where abrasion is severe
- Where oil is present
-
View Polycorp Standard Products For Hard Natural Rubber
1003-SEMI-HARD NATURAL RUBBER
Black general purpose 90A durometer semi hard lining with or without tie gum. Excellent chemical and temperature resistance. Superior performance in water treatment equipment. A-I-E Cure. FDA compliant
1004-SEMI-HARD NATURAL RUBBER
Black 60 D durometer Superflexite A, semi-hard natural rubber lining with soft natural rubber tie gum with excellent chemical and temperature resistance at elevated temperatures. A-I-E Cure.
1006-SEMI-HARD NATURAL RUBBER
Black " Acidseal E" 70 D durometer general purpose hard natural rubber lining with soft natural rubber tie gum for severe corrosion at elevated temperatures. A-I-E Cure
1017-SEMI-HARD NATURAL RUBBER
A general purpose 90A durometer black, semi-hard lining with excellent chemical and temperature resistance. Superior performance in water treatment equipment.
1035-SEMI-HARD NATURAL RUBBER
Black 55 shore D durometer general purpose field curing semi-hard natural rubber lining, "Superflexite B". Uses soft natural rubber tie gum. Excellent semi-hard lining with excellent chemical resistance at elevated temperature. A-I-E Cured.
1036-SEMI-HARD FLEXIBLE RUBBER
A black 85 A durometer (35 D) combination of natural rubber and synthetic materials with or without soft natural rubber tie gum. Excellent chemical resistance at elevated temperature. FDA compliant. A-I-E cure.
1038-SEMI-HARD CHEMICAL CURE
Black, 85 A/35D durometer chemical cure semi-hard natural rubber with soft natural rubber tie gum. Repair stock for black semi-hard natural rubber. For FDA application use C-600 activator to cure the rubber and for Non-FDA application use C-700. Ambient cure or steam assist cure.
1040-WHITE SEMI-HARD NATURAL RUBBER
A general purpose 85A/35D durometer white semi-hard natural rubber with natural rubber tie gum lining with excellent chemical and temperature resistance. Superior performance in water treatment equipment. FDA compliant. A-I-E
1042-SEMI-HARD FLEXIBLE RUBBER
White 85A durometer semi-hard ebonite blend of natural rubber and synthetic material with natural rubber tie gum offering maximum resistance to chemical and temperature. A-I-E Cure. FDA compliant.
1048-SEMI-HARD NATURAL RUBBER
A general purpose black 85 A / 35 D semi-hard lining with or without natural rubber tie gum. Excellent chemical and temperature resistance and superior performance in water treatment equipment. FDA compliant.
1053-GRAPHITIC SEMI-HARD NATURAL
Black 95 shore A / 55 shore D graphite semi-hard lining with soft natural rubber tie gum possessing outstanding resistance to wet chlorine, chlorinated brine and chlorine water solution. A-I-E Cure.
2017-SEMI-HARD NATURAL RUBBER
Superflexite B A black general purpose 55 D semi-hard natural rubber lining with excellent chemical at elevated temperature.
3014-SEMI-HARD NATURAL RUBBER
A general purpose semi-hard chemical cure repair stock for semi-hard natural rubber. Good chemical resistance at elevated temperature. FDA compliant.
REQUEST FOR CONTACT
Looking for more information. Help us help you by filling out our simple online contact form.
RequestGet the App!
Polycorp Material Selector and Usage Calculator App.
