107 Silicone Rubber Base 120000 cst is hydroxyl‑terminated polydimethylsiloxane with CAS 70131‑67‑8. This ultra‑high‑viscosity 107 grade is specially developed for structural sealant. It exhibits excellent filler wet‑out capacity. After cross‑linking with reinforcing fillers and crosslinkers, it achieves high modulus, strong cohesive strength and outstanding weather resistance, widely applied for structural silicone sealant and high‑load silicone compound manufacturing.

Product Detail

Product Overview

107 Silicone Rubber Base 120000 cst is OH‑terminated polydimethylsiloxane, CAS 70131‑67‑8. As an ultra‑high‑viscosity base polymer for condensation‑cure silicone system, it features precisely controlled hydroxyl content and stable viscosity. When compounded with reinforcing fillers and functional silane cross‑linkers, it endows finished sealant with high cohesive strength and high modulus, meeting performance requirements of structural sealing applications. Strict quality control ensures stable batch performance for large‑volume industrial production.

Key Features

Ultra‑high viscosity 120000 cst for structural sealant formulation
Reactive hydroxyl end‑groups for stable condensation cross‑linking
Superior wetting property for reinforcing mineral fillers
Builds high modulus, tensile strength and cohesive force after curing
Good compatibility with neutral alkoxy and oxime cross‑linkers
Excellent weathering and ageing resistance of cured products
Low volatile components, reliable batch‑to‑batch consistency

Main Applications

High performance structural silicone sealant
Heavy‑duty neutral construction sealing adhesive
High modulus condensation‑cure RTV silicone rubber
High strength silicone compound for load‑bearing sealing
Industrial assembly and bonding silicone products
Custom high‑performance condensation cure silicone formulations

Processing Suggestions

All feeding, kneading and dispersion operations shall be carried out under strictly moisture‑isolated conditions. Formulate together with reinforcing fillers, suitable cross‑linking agents and organometallic catalysts. Adjust filler loading and additive proportion according to target modulus, tensile strength and extrusion rate. Strictly prevent moisture ingress during the whole production workflow.

Storage & Packing

Store in cool, dry and well‑ventilated warehouse. Keep original drum tightly sealed. Protect product from moisture, high temperature and direct sunlight. Standard iron drum packaging. Reseal drum immediately after partial material discharge to avoid moisture contamination. Proper storage conditions are required to maintain full shelf‑life.

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.