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Diffusion Pump Oil Rj 274 - China

price: contact company for price

Production Description

Equivalent Brand: Dow Corning 704, MT-704, and HIVAC-F-4

Diffusion Pump Oil RJ-274 is a colorless to light yellow transparent oily, single-component fluid designed for high vacuum of 10torr (untrapped). It performs well in tough, rugged applications and offers quick pumpdown, even after exposure to air at operating temperatures. RJ-274 is thermally and chemically stable allowing it to keep pump jets free of tars and hard carbon.

Technical Index

Property Specification

Chemical composition Tetramethyl tetraphenyl trisiloxane

Ultimate Vacuum, torr(untrapped) 10

Saturated Vapor Pressure, torr 510

Specific Gravity 1.06 ~ 1.07

Viscosity (25°C) mm2/s 38±3

Flash Point °C ≥210

Refractive Index 25°C 1.5500~1.5600

Congealing Point °C -35

Molecular Description 484


Diffusion Pump Oil RJ-274 can be used in variety of applications, including:

Electrical and electronics industry

• TV tubes, fluorescent tubes, cathode ray tubes

• ordinary bulbs

• capacitors

• rectifier metallised film vacuum system

Optical industry

• surface improvements

• anti reflective coatings

• optical filters and mirrors

Metallurgy industry

• high-vacuum furnaces

• melting, degassing and sintering refractory metals;

• thick-film deposition

Plastics industry

• mirror coatings

• protective coatings

• film coatings Other industries

• processing metals and fuels

• accelerators

• molecular plants

• R & D plants

• mass spectrometry


Be used as transmission fluid in high-temperature carriers and various instruments.

Package, Transportation & Storage

Diffusion Pump Oil RJ-274 is available in 5kg Iron drums or 200kg Iron drums.

Transport as non-hazardous chemicals, keeping away from rain and sunlight.

Shelf life: 3 years.

Notice: Above-mentioned technology is based on the situation that we master. For actual application, please refer to your actual requirement.

Company Contact:

  • Phone: 8657128055280

  • Address: Office add: Floor 12th, No.99, Huaxing Rd, Hangzho, Hangzhou , China

  • Email: Email

Published date: August 1, 2013 -

  • Business Description: involved in international trade import export of goods, products, and services

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