GM6148M - Epichlorohydrin_百度文库

新建 上传 首页 助手 最近 资料库 工具

Material

Specification

Rubber

GM6148M

Fuel

and

Oil

Resistant

Tubing

Epichlorohydrin

–

Non-Reinforced

1

Scope

This

specification

covers

one

type

of

non-reinforced

flexible

tubing

for

use

in

evaporative

emissions

sys-

tems

and

vacuum

systems

and

which

is

intended

to

withstand

continuous

service

temperatures

from

−

40

to

+125

󰀎

C.

This

material

is

not

suitable

for

appli-

cations

in

which

it

could

be

exposed

to

oxidized

fuel

or

oxidized

fuel

mixtures

(i.e.

map

sensor

tubing).

1.1

Material

Description.

1.1.1

Material

Identification.

1.1.1.1

Construction.

The

tubing

shall

consist

of

a

single

wall

of

non-blooming

epichlorohydrin

copoly-

mer.

T

ubing

shall

be

black.

1.1.1.2

Tube

Marking.

The

tubing

shall

be

legibly

marked

with

the

following

information

in

the

sequence

stated:

Nominal

inside

diameter

expressed

as

frac-

tion

of

an

inch

(Ex.:

5/32),

GM

specification

num-

ber

(GM6148M),

date

code,

tube

manufacturer’s

code

identification

as

designated

by

Rubber

Manufactur-

ers

Association,

and

the

manufacturing

plant

location

code.

Such

marking

shall

be

printed

parallel

to

the

axis

in

white

or

light

blue

block

letters

not

less

than

3

mm

high

and

the

open

space

between

the

specified

markings

shall

not

exceed

25

mm.

1.1.1.2.1

The

date

code

shall

consist

of

six

digits:

the

first

two

digits

shall

represent

the

month

(01

through

12)

of

the

year,

the

next

two

shall

represent

the

day

of

the

month

(01

through

31),

and

the

last

two

shall

be

the

last

two

digits

of

the

year.

1.1.1.2.2

Parts

conforming

to

this

specification

which

are

too

short

for

the

marking

required

in

1.1.1.2

shall

be

marked

as

specified

by

the

purchaser’s

engineer-

ing

department.

1.1.1.3

Dimensions

and

Tolerances.

T

ubing

fur-

nished

to

this

specification

shall

conform

to

the

dimen-

sions

and

tolerances

shown

in

T

able

1

for

the

size

(nominal

inside

diameter)

specified

by

the

purchaser.

Note:

Concentricity

based

on

total

indicator

reading

between

inside

bore

of

outer

surface

of

tube

shall

not

exceed

values

given

below:

Sizes

over

6.35

mm

(1/4

inch)

up

to

12.70

mm

(1/2

inch)

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

1.0

mm

Sizes

over

12.70

mm

(1/2

inch)

.

.

.

.

.

.

1.3

mm

©

Copyright

2000

General

Motors

Corporation

All

Rights

Reserved

Originating

Department:

North

American

Engineering

Standards,

Records

and

Documentation

December

2000

Page

1

of

5

Copyright General Motors North America

Provided by IHS under license with GM

Licensee=Mark IV Auto/Dayco - Rochester Hills/5917325101

Not for Resale, 07/25/2008 07:54:21 MDT

No reproduction or networking permitted without license from IHS

--`,,,,,,,,`,,,`,,,,`,,,,,````,-`-`,,`,,`,`,,`---