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Poly 74-24 Liquid Rubber Kit Poly 74-24 Liquid Rubber Kit

Poly 74-24 Liquid Rubber Kit Poly 74-24 Liquid Rubber Kit

Availability: In Stock
Product Code: MOLPOL7424KIT16LBSLI

RTV Liquid Rubber

These polyurethane liquid mold rubbers are soft to mid-range hardness, high-performance, room temperature curing systems. They offer superior flexibility and toughness allowing durable molds to be made from relatively simple to the most highly detailed, undercut and complex models. The 74-Series liquid mold rubbers are supplied as pourable liquids so poured block and blanket molds can be made with ease; thickening agent can be easily added to make brush-on molds.

Choose from 16-pound or 80-pound kit.

  • Shore A20 to A55 hardness liquid mold rubbers.
  • High-strength, abrasion-resistant, longest lasting molds.
  • Reproduces fine details.
  • Pourable or brushable (see “Thickeners” under “Accessories” for brushing).
  • Can be accelerated for rapid cure.
  • Economical & versatile.
  • Ideal for the most demanding mold making applications.
  • All rubbers can be demolded after ~16 hours
Mix Ratio Shore Hardness Pour Time Cured Color
1A:1B by weight A25 20 min Amber
Mixed Viscosity Specific Volume Demold Time Shrinkage Upon Cure
2,000 cP 27.5 in³/lb ~16 hr. Nil

 *Shrinkage is primarily caused by gelling while hot then cooling. Parts that cure with minimal temperature rise exhibit minimal shrinkage.

Product Literature: Technical Bulletin | Safety Data Sheets | Physical Properties Bulletin | Sealer & Release Agent Selection Guide

Video Tutorials: For Poly 15-Series video tutorials, visit the Poly 15-Series page or the Polytek YouTube Channel.

The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected. For additional physical property specifications, refer to the Physical Properties Bulletin.

RTV Liquid Rubber

These polyurethane liquid mold rubbers are soft to mid-range hardness, high-performance, room temperature curing systems. They offer superior flexibility and toughness allowing durable molds to be made from relatively simple to the most highly detailed, undercut and complex models. The 74-Series liquid mold rubbers are supplied as pourable liquids so poured block and blanket molds can be made with ease; thickening agent can be easily added to make brush-on molds.

Choose from 16-pound or 80-pound kit.

  • Shore A20 to A55 hardness liquid mold rubbers.
  • High-strength, abrasion-resistant, longest lasting molds.
  • Reproduces fine details.
  • Pourable or brushable (see “Thickeners” under “Accessories” for brushing).
  • Can be accelerated for rapid cure.
  • Economical & versatile.
  • Ideal for the most demanding mold making applications.
  • All rubbers can be demolded after ~16 hours
Mix Ratio Shore Hardness Pour Time Cured Color
1A:1B by weight A25 20 min Amber
Mixed Viscosity Specific Volume Demold Time Shrinkage Upon Cure
2,000 cP 27.5 in³/lb ~16 hr. Nil

 *Shrinkage is primarily caused by gelling while hot then cooling. Parts that cure with minimal temperature rise exhibit minimal shrinkage.

Product Literature: Technical Bulletin | Safety Data Sheets | Physical Properties Bulletin | Sealer & Release Agent Selection Guide

Video Tutorials: For Poly 15-Series video tutorials, visit the Poly 15-Series page or the Polytek YouTube Channel.

The color of polyurethane Part Bs may change in color from batch to batch or may darken with age, but product performance is not affected. For additional physical property specifications, refer to the Physical Properties Bulletin.

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