Products » Rubber Cure Salts
A family of salts specially formulated for use in rubber curing. Most of Heatbath®/Park Metallurgical's rubber cure products are nitrate/nitrite salts. However, we also offer a Nitrite-free alternative for those who are concerned with the possible formation of nitrosamines. With our rubber cure salts, no reaction with surfaces of extruded or molded rubber parts will occur below 500 deg F in the normal cure times. All salts are completely water soluble and are easily washed from parts. All products are available in a predominantly free flowing form, a crystalline form with an anti-caking agent, or in a briquette form available under the trade name, PARKETTES.
Rubber Cure Salts
| PRODUCT IDENTITY | MELTING POINT | WORKING RANGE |
Nitrate/Nitrite Salts | ||
| Parcure 275 | 275 deg F (135 deg C) | 300-1100 deg F (149-593 deg C) |
| Parcure 290 | 288 deg F (142 deg C) | 325-1100 deg F (163-593 deg C) |
| Parcure 305 | 305 deg F (152 deg C) | 330-1100 deg F (166-593 deg C) |
Nitrite Free Salts | ||
| Parcure 300 | 300-325 deg F (149-163 deg C) | 350-1100 deg F (177-593 deg C) |
Parcure 275 An eutectic mixture offering the lowest possible melt point and the widest working range. (275 Parkettes)
Parcure 290 An eutectic mixture with slightly higher melt point and narrower working range but lower in cost than Parcure 275. (290 Parkettes)
Parcure 305 A very popular rubber cure salt that combines wide working range with low cost and relatively lower dragout when used above 400 deg F. (330 Parkettes)
Parcure 300 A nitrite-free alternative for customers concerned with the introduction of nitrosamines from the alkali nitrite raw materials used in the production of commercial rubber cure salts. Within its working range, Parcure 300 exhibits viscosities less than or equal to more conventional salts now used; so resultant dragout could be less.