Butyl

Highly effective in vacuum sealing applications. Good seal for hydraulic systems.


Trade Name(s):

Exxon Butyl

Exxon Chemical

Polysar Butyl

Bayer Polymer

ASTM D1418 Designation

IIR

Standard Colour

Black

Description

An all-petroleum product, Butyl is a copolymer of isobutylene and isoprene and has largely been replaced by Ethylene Propylene since its introduction.

Key Uses(S):

Highly effective in vacuum sealing applications. Good seal for hydraulic systems.

Temperature Range:

Standard Compound: -50°C (-50°F) to +121°C (250°F)

Hardness (Shore A):

40 TO 90

Features

With outstanding low permeability to gases, Butyl is especially effective in vacuum sealing applications. It also features excellent resistance to ozone and sunlight aging. Butyl further features excellent shock dampening capabilities. Only slightly affected by oxygenated solvents and other polar liquids, Butyl is often utilized in seals for hydraulic systems using synthetic fluids. It is good with MEK, and silicone fluids and greases.

Limitations

Because it is a petroleum product, Butyl has poor resistance to hydrocarbon solvents and oils and diester-based lubricants. Halogenated Butyl has been introduced to expand oil and chemical resistance to this polymer. Chlorobutyl and Bromobutyl have better resistance. These polymers have been accepted by the medical industry for stoppers and septum’s for pharmaceutical applications.

Please note: This Material Data Sheet section is to be used as a professional guide only. Eastern Seals (UK) Ltd may source their products from a variety of Quality Approved Suppliers and the data shown should not be relied upon by any purchaser without verification of material source.

 

ES REF
Colour
Temp Range
Shore
Notes
Data Sheet
BUTYL60 BLACK -45°C to +121°C 60 Highly effective in vacuum sealing applications. Good seal for hydraulic systems.
BUTYL70 BLACK -50°C to +121°C 70 Highly effective in vacuum sealing applications. Good seal for hydraulic systems.

REQUEST A CALLBACK

If you have any queries, or would like any more information,
don’t hesitate to get in touch



Online store

We are the largest supplier of British Standard, Metric series O-rings and sealing solutions.

Visit Store Now

Search

Search
Generic filters
Exact matches only
Filter by Custom Post Type