Delrin 525GR is very strong and stands up well to heat exposure, chemically resistant and has a low moisture absorption. This industrial plastic is a 25% glass reinforced acetal homopolymer.

1. Emco Industrial Plastics - (888) 588-0597
Delrin® 525GR
2014- 01- 02 13:01:11 emcop
Applications
Bushings
Bearings
Seals
Gasket s
Slide Pads
Advantages
Excellent
Wear
Propert ies in
bot h wet and
dry
environment s
Low moist ure
absorpt ion
Low f rict ion
Good
chemical
resist ance
Good
dimensional
st abilit y
Easy t o
machine
FDA
Compliant
(whit e only)
[ Polyoxymethylene, Polyacetal ]
Delrin® 525GR
Delrin® 525GR is a 25% glass reinf orced
acet al homopolymer f or inject ion molding. It has very high
st rengt h, st if f ness, and high def lect ion t emperat ure, and
excellent creep resist ance. Delrin® is t he cryst alline
t hermoplast ic of choice f or impact and wear resist ance in a
wide range of indust rial and mechanical applicat ions. Wit h low,
consist ent int ernal st ress, t he mat erial is easily machined and
f abricat ed, experiencing lit t le dimensional change during
machining and use.
Availability
TYPE SIZE LENGTH COLOR
Sheet 1/4″ – 4′ 24” x 48’, 12” x 48”, 48” x
96”
Brown, Whit e
(FDA)
Rod 1/8″ –
4″ 96”, 120” Brown, Whit e
(FDA)
Give us your cut -t o-size dimensions. We will precision-cut
t hese plast ics t o your exact size. Addit ional sizes and colors
available upon request .
Properties

2. PHYSICAL PROPERTIES UNITS ASTM RESULTS
Densit y lb/in³ D792 1.50
Wat er Absorpt ion, 24 hrs % D570 0.15
MECHANICAL
UNITS ASTM RESULTS
PROPERTIES
T ensile St rengt h @ yield psi D638 6800
T ensile Modulus psi D638 -
T ensile Elongat ion @Break % D638 22.3
Flexural St rengt h psi D790 9500
Flexural Modulus psi D790 299000
Compressive St rengt h psi D695 -
Compressive Modulus psi D695 -
Hardness, Rockwell R D785 -
IZOD Impact St rengt h
Not ched f t -lb/in D256 0.8
THERMAL PROPERTIES UNITS ASTM RESULTS
Coef f cient of Linear T hermal
(x 10^-5
Expansion
in./in./°F) -
Heat Def lect ion T emp at 264
psi °F 184
Melt ing T emperat ure °F -
Max Operat ing T emp. °F -
T hermal Conduct ivit y BT U-in/f t ²-
hr-°F -
Flammabilit y Rat ing -
ELECTRICAL
PROPERTIES
UNITS ASTM RESULTS
Dielect ric St rengt h. 1/8″ t h. V/mil D149 450000
Dielect ric Const ant @1 MHz -
Dissipat ion Fact or@1 MHz D150 -
Volume Resist ivit y, 50% RH ohm-cm D257 -
NOT E: T he propert y values present ed above are t ypical
values int ended f or ref erence and comparison purposes only.
T hey should NOT be used as a basis f or design specif icat ions
or qualit y cont rol. Cont act us f or manuf act urers’ complet e
mat erial propert y dat asheet s. All values at 73°F (23°C) unless
ot herwise not ed.
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