Hydraulic Fluids Resistant Silicone O Ring Seals With Desirable Working Properties

Hydraulic Fluids Resistant Silicone O Ring Seals With Desirable Working Properties

The term silicone covers a large group of materials in which vinyl-methyl-silicone (VMQ) is often the central ingredient. Silicone elastomers as a group have relatively low tensile strength, poor tear and wear resistance. However, they have many useful properties as well. Silicone materials have good heat resistance and good cold flexibility. They also have good ozone and weather resistance as well as good insulating and physiologically neutral properties.

Names: Silicone, VMQ

Both o-rings and gaskets can be made from silicone materials.

Thermal Properties
Standard Min Temp. -75°F (-59°C)
Max Temp. 450°F (232°C)

COMPATIBILITY

Chemical Resistance

Engine and transmission oil (e.g. ASTM oil No.1)
Animal and vegetable oil and grease
Brake fluid (non-petroleum base)
Fire-resistant hydraulic fluid, HFD-R and HFD-S
High molecular weight chlorinated aromatic hydrocarbons (including flame-resistant insulators, and coolant for transformers)
Moderate water resistance
Diluted salt solutions
Ozone, aging, and weather resistant

Description: A group of elastomers, made from silicon, oxygen, and hydrogen, Silicones are renowned for their retention of flexibility and low compression set characteristics, within one of the widest working temperature ranges for elastomers.

Key Use(s): Static seals in extreme temperature situations. Seals for medical devices, compatible with FDA regulations.

Temperature Range:
Standard Compound: -85° to +400°F

Hardness (Shore A): 40 to 85

Features: Phenyl (PVMQ) based silicones can perform to -85°F. New polymers can take short term to 600°F.

Limitations: Generally, low abrasion and tear resistance, and high friction characteristics preclude silicones from effectively sealing some dynamic applications. Silicones are also highly permeable to gases and are generally not recommended for exposure to ketones (MEK,) or concentrated acids.

In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.

KEY FEATURES:

Ningbo Robon Sealing CO.,LTD is a professional rubber products manufacturer in Ningbo, we produce various rubber products: rubber seal, rubber o ring ,ED ring, o ring cord, rubber flat washer, special parts and other rubber products.

The main material we used are NBR, EPDM, , FKM, AFLAS, CR, Butyl, HNBR, SILICON, FFKM, PU or approved by FDA, NSF, WRAS etc.

We have the most advanced vulkameter, hardness tester, projectors, image instrument,tensile testing machine, and other professional testing equipment.

Our company is located in Ningbo City, Zhejiang Province, P.R.China. Which is a seaport city with the most economic vitality near the east sea. North link to Shanghai by 2 hours drive, and East link to enjoy the most convenient Sea, Land and Air transportation advantages.

Robon has always been adhering to the service principle of " Quality is the top priority, fair price " to serve customers. The company bends itself to serve customers with competitive price, best quality, fast delivery and timely after-sales service. Welcome to contact us by email: info@rb-oring.com