RTV Urethane Rubber Kit, 16 oz, Brush On , 35 Hardness

Description

Polygel 35 Brush On
RTV POLYGEL 35 BRUSH ON POLYURETHANE MOLD MAKING RUBBER
"Click on kit size below to go to listing for that kit"
Kit Size
Kit Contains
Cost/Gal
Kit Cost
16 oz(1 pt) Kit
8 oz Resin and 8 oz Hardener Hardener
.88
32 oz(1 qt) Kit
16 oz Resin and 16 oz Hardener
.70
2 qt Kit(1/2 gal)
1 quart Resin and 1 quart Hardener
.50
1 Gallon Kit
1/2 Gallons Resin and 1/2 Gallons Hardener
.40
.40
2 Gallon Kit
1 Gallons Resin and 1 Gallons Hardener
.00
8.00
10 Gallon Kit
10 Gallons Resin and 10 Gallons Hardener
.62
6.20
"Click below to go to other hardnesses of Urethane
30 Hardness
60 Hardness
80 Hardness
90 Hardness
Polygel 35, Brush On
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Polygel 35 Overview
Self Thickening RTV Liquid Urethane Rubber For Brush-On Molds Polygel mold rubbers consist of two liquids, Part A and Part B which after mixing immediately gel to a brushable or trowellable consistency, then cure overnight at room temperature to a flexible, tough RTV rubber. They are ideal for molds built up with a brush, spatula or spray, Polygel mold rubbers are recommended for evaluation as a mold material for plaster, cement and waxes, as well as for limited casting with polyester epoxy and polyurethane resins.
MODEL PREPARATION:
Porous models (i.e., wood or plaster) must be sealed to prevent Polygel from penetrating the pores of the material. Wax, lacquer, petroleum jelly, paint and most other coatings are suitable sealers. If shellac is used as the sealer, it must be thoroughly coated with release agent as Polygel bonds tenaciously to shellac. Fresh, moist plaster must be sealed particularly well to insure a proper cure on the surface of the Polygel mold. This can be accomplished with multiple coats of shellac, shellac coated with a Krylon® spray, or potter’s soap. The sealed or nonporous model and other materials that will contact the Polygel should then be sprayed or coated with
"Polease-2300 Release Agent"
, which should be brushed out for thorough coverage. If there is any question about the compatibility between the Polygel and the prepared model surface, perform a test cure on an identical surface to verify curing and good release. Porous models must be vented from beneath to prevent trapped air from causing bubbles in the mold rubber.
MIXING & CURING:
Before use, be sure that Parts A and B are at room temperature and tools and molds or models are ready to go. Surfaces and air temperature should be above 60°F during application and for the entire curing period. Cool temperatures slow the cure, while warm temperatures speed the cure. Weigh Parts A and B into a suitable, clean container. Volume measurement can be used, but is never as accurate as weighing. Mix thoroughly, scraping the sides and bottom until a uniform mix is obtained. Carefully apply the mixed Polygel over the dry, properly prepared model. When brushing Polygel mold rubber, allow the first coat to cure enough so that the second coat will not disturb it (usually about 1 hour), then apply a second coat being careful to cover any thin spots in the first coat. Do not allow prior layers to cure completely before applying subsequent coats. Ideally a blanket mold should be at least 1/8-inch thick but not more than 3/8-inch, since too thick a layer of rubber causes difficulty  turning a mold back on itself during demolding.  Allow to cure at room temperature prior to demolding or building the mold shell. Strength continues to develop for several days.
I also have
"Mixing and Measuring containers and Mixing Sticks"
in my store.
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Physical Properties
Mix Ratio-----------------------1A:1B
Hardness, Shore A-------------- 35
Working Time ---------------------8 to 10 Minutes
Demold Time ------------------ 24 hours
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Notes:
I offer local pickup in West Palm Beach Florida. Pickup time will require about 24 hours. No pickup on weekends and holidays. Contact me for directions.
Email for price on larger size kits.
The picture is representive of what the item looks like, size of containers are determined by the size of kit purchased.
Custom fees are paid by buyer.
Shipping is combined when more than one item is purchased.
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