Vespel® SP-2515

Vespel® SP-2515

Vespel® S polyimide family of parts and shapes with differing sets of attributes The Vespel® S Family of products are highly durable polyimides and are used in demanding applications where exceptional thermal resistance, low wear and/or low friction, strength and impact resistance are desired.

Parts made from DuPont™ Vespel® SP-2515 offer a low coefficient of thermal expansion (CTE), excellent wear against both aluminum and steel alloys, and a low coefficient of friction in both dry and lubricated conditions. These properties make Vespel® SP-2515 parts ideal for applications such as seal rings, thrust washers, and bushings where high energy efficiency and dimensional stability, over a broad range of temperatures, are a requirement.

Available Sizes

0
0
0

Other Property

Water Absorption
D-570
% weight change
0.3
Specific Gravity
D-792
—
1.73

Thermal Property

Specific Heat
E-1269
J/kg·°C (Btu/lb·°F)
895 (0.214)
Coefficient of Thermal Expansion • Perpendicular • Parallel
E-831
m/m·°C or m/m·K (in/in·°F)
23 x 10-6 (13 x 10 -6) 54 x 10-6 (30 x 10 -6)
Thermal Conductivity
F-433
W/m-K (Btu/hr·in·°F)
2.05 (0.10) 2.04 (0.10)

Wear Property

Coefficient of Friction, Unlubricated, Air • 0.88 (25K) PV • 3.50 (100K) PV
Falex
—
0.21 0.33
Wear Factor, Unlubricated, Air • 0.88 (25K) PV • 3.50 (100K) PV
Falex
mm-sec/MPa-m-hr (in3 -min/ft-lb-hr)
5.4 x 10 -3 (74 x 10 -10) 20.4 x 10-3 (282 x 10 -10)

Mechanical Property

Deformation Under Load • 10 minutes • 24 hours
D-621
% deformation
0.09 0.11
Tensile Strength
D-638 E-8 Specimen
MPa (kpsi)
39 (5.7) 25 (3.6)
Compressive Modulus
D-695
MPa (kpsi)
2,080 (302) 1,840 (266)
Compressive Strength
D-695
MPa (kpsi)
105 (15.3) 71 (10.3)
Flexural Strength
D-790
MPa (kpsi)
61 (8.8) 38 (5.5)
Tensile Elongation
D-638 E-8 Specimen
%
1.9 2.1
Flexural Modulus
D-790
MPa (kpsi)
5,560 (807) 3,820 (554)
Young’s Modulus
D-638 E-8 Specimen
MPa (kpsi)
6,340 (920) 2,260 (328)
Product Details
Design
TIGHT TOLERANCE SEAL RING
Seam
SP (PI)
Packaging
SEAL RING, MICROCUT
Hazard
Coated Material
DF2 PARTS
Features
DF2
Technical Resources

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