PSR25A/PSR25B/Casting Silicone- Food Grade/ 2.0 Kg

Silicone PSR25 Moulding Rubber

Platinum Curing

Shore Hardness: 25 A

 

PSR25A:     1 kg     Bucket

PSR25B:     1 kg     Bucket

 

PSR 25 is a two component Platinum Cured (Addition) silicone elastomer which cross-links at room temperature by a addition reaction. The resulting product is flexible, elastic and gives excellent tear resistance. Excellent tear and Tensile strength. Food grade silicone.

 

Application

PSR 25 is ideally suited for detailed reproduction. Moulds made from PSR 25 are used in the manufacture of components in polyester resin, plaster, concrete, polyurethane, wax, soap, cakes, chocolate.

It is used where food grade is required.

Compliance with FDA Certificate.

 

Instructions

Weigh equal amounts of part A with part B, using a digital scale, accurate to 1 or 2 g, into a paper cup. Mix slowly for about 3 minutes.

Transfer the contents to a second paper cup, scrapping the sides and bottom. Mix for another 2 minutes. And Pour. This two – cup method is very important, as part A and part B are of the same colour, and the sides of the first cup is never mixed. 

As the food grade version is not pigmented, it is not easy to ensure that both components are thoroughly mixed. Therefore, it is suggested that the two components be mixed well in one container, then transferred to another container, and mixed again. This will ensure that there is no unmixed material.

 

Characteristics

Appearance      Liquid

Colour     

A: Translucent

B Translucent  

Mix ratio         100 A : 100 B

Working Time at 25C          40 to 60  minutes

Demoulding Time at 25C                 6 – 8  hours

Viscosity       8000 to 10000 mPa.s (cps) at 25C

 

CHARACTERISTICS after CURE

 (Approximate)

Shore Hardness A                             25 + / – 2

Tensile Strength                                > 4,5 MPa

Elongation                                          > 480  %

Tear KN/ m                                        > 27

Temperature Resistance                   200 C

 

First Aid:

Inhalation: Remove the source of contamination and move victim to fresh air. Eye contact: Flush eyes with plenty of water. If irritation persists, seek medical attention. Skin contact: In case of skin contact, wash thoroughly with soap and water; remove contaminated clothing and wash before reuse; seek medical attention if rash develops. Ingestion: Do not induce vomiting. Contact physician immediately.

 

The above data are offered for customer’s guidance only. It implies no guarantee. Customers must conduct their own tests to determine the suitability of the material for their specific applications. Date: Jan 2020 Version 20.1