Akron 4X™ Silicone mold rubber
All of our silicones are manufactured with the highest quality ingredients. All exhibit high tear strength and elongation. They are soft as putty in the uncured state so mold packing is quick and easy.
4X Gold™
introduced in 1994, was the first true high strength silicone developed for jewelers. Emulated by many in the ensuing years, 4X Gold™ chemistry still provides the most desired combination of properties available today. This is currently our softest silicone mold rubber in the 4X line.
Hardness: 35A
Shrink Rate: 2.8%
4X Quick Cure™
is the very first rapid curing silicone. Introduced in 2001, it is a medium hardness silicone. Cured in half the traditional time at 7 minutes per 1/4 inch (6.35mm), it also provides very high tear strength and flexibility. 'A great all purpose silicone mold rubber.'
Hardness: 40A
Shrink Rate: 1.8%
4X Blue™
is our stiffest silicone mold rubber in the 4X line. Good for larger patterns such as broaches, belt buckles, bangle bracelets, decorative items and sword parts. Can be used in any application that requires a stiff rigid mold. Great for powder-seperation molds. Works very well for direct low melt alloy casting.
Hardness: 50A
Shrink Rate: 1.6%
4X ZeroShrink™
is the only zero shrink heat cure mold rubber available today. This silicone rubber provides results normally only seen from a metal mold. 2007 MJSA innovation award winner. Works well with all mold making applications especially those that require exact replication. Because of the greater density, finished molds resist internal wax deflection (less flash).
Hardness: 45A
Shrink Rate: 0.5%
4X LSLT-160™
introduced in 2003 is the very first high speed cure mold rubber. It neatly copies carved waxes, 3D printed and many different RP resin patterns. Provides extremely crisp detail replication. LSLT stands for Low Temperature Low Shrink. Cure temps as low as 160°F see instructions for further details.
Hardness: 45A
Shrink Rate: 0.64%
packaging
Pre-Cut: 2.27 kg. (5 lb.) individual box 8 pack per case 18.144 kg. (40 lb.)
1/4 x 1 7/8 x 2 7/8" (6.35 x 47.6 x 73mm) pcs.
Strip: 2.27 kg. (5 lb.) individual box 8 pack per case 18.144 kg. (40 lb.) or 13.6 kg. (30 lb.) Bulk pack
1/4 x 2 7/8 x 18" (6.35 x 73 x 457mm)
Standard Sheet: 2.27 kg. (5 lb.) individual box
1/4 x 8 x 9" (6.35 x 203.2 x 228.6mm)
other cut sizes available by special order.