Product Description
Military and Aerospace Fluorosilicone (FVMQ) O-Rings from Datwyler”s Parco Brand: US industry know-how, Swiss quality standards – and compliance with multiple military and aerospace specifications.
The Datwyler Advantage: Our military and aerospace-compliant fluorosilicone rubber O-rings have excellent physical properties. Combine that with batch number and cure date traceability, AS9100 and AC7115 certifications as well as a wide variety of applications, and rest assured that you’ve made the right choice.
Key Benefits
• Exceeds military and aerospace requirements: Parco 1933-70 seals exceed the requirements of the MIL-DTL-25988 Type 1, Class 1, Grade 70 specification. • Excellent performance at low temperatures: Parco 1933-70 seals can be used in static applications with continuous service temperatures as low as -90°F. • Outstanding resistance to compression set: Parco 1933-70 seals have a compression set of only 9 percent after 22 hours at 347°F. • Wide range of service temperatures: Parco 1933-70 seals are suitable for applications ranging from -90 to +350°F. • Color: Parco 1933-70 seals are blue.
Chemical Resistance
USE WITH
Automatic Transmission Fluid Gasoline Military Aircraft Hydraulic Fluid Silicone Oil Toluene
DO NOT USE WITH
Acetone Ethyl Acetate
Typical Values for Compound
Physical Property | Requirements | Result | ASTM Test Method |
Original Properties | |||
Specific gravity | 1.51 to 1.55 | 1.64 | D297 |
Hardness, Shore A | 70 ± 5 | 73 | D2240 |
Tensile strength, psi, min. | 750 | 949 | D1414 |
Ultimate elongation, pct., min. | 125 | 173 | D1414 |
TR-10, °C(°F), max. | -56.7(-70) | -61 (-78) | D1329 |
Compression Set, | D395 | ||
70 hours at 24°C (75°F) | Method B | ||
pct. of original deflection, max. | D1414 | ||
Under 0.110 inch | 15 | 7 | |
Over 0.110 inch | 15 | 9 | |
Heat Aging | D573 | ||
70 hours at 200°C(392°F) | D1414 | ||
Hardness Change, pts, Shore A | -5 to 10 | 1 | |
Tensile strength change, pct., max. | -25 | -14.85774499 | |
Ultimate elongation change, pct., max. | -25 | -13.87283237 | |
Weight loss, pct., max. | 2 | 0 | |
Compression Set, | D395 | ||
22 hours at 175°C (347°F) | Method B | ||
pct. of original deflection, max. | D1414 | ||
Under 0.110 inch | 30 | 8 | |
Over 0.110 inch | 30 | 9 | |
Fluid Aging, Mobil Jet Oil II | D471 | ||
70 hours at 150°C(302°F) | D1414 | ||
Hardness Change, pts, Shore A | -15 to 15 | -8 | |
Tensile strength change, pct., max. | -40 | -33.19283456 | |
Ultimate elongation change, pct., max. | -25 | -19.07514451 | |
Volume change, pct. | 1 to 15 | 9 | |
Compression Set | |||
pct. of original deflection, max. | |||
Under 0.110 inch | 30 | 8 | |
Over 0.110 inch | 30 | 9 | |
Fluid Aging, Jet Reference Fuel (AMS 2629, Type 1) | D471 | ||
22 hours at 24°C(75°F) | D1414 | ||
Hardness Shore A, max. | -20 | -4 | |
Tensile strength change, pct., max. | -45 | -17.28134879 | |
Ultimate elongation change, pct., max. | -35 | -5.202312139 | |
Volume change, pct. | 1 to 25 | 6 |
91000000694
Overview
O-Rings
Material
FLUOROSILICONE – FVMQ
Dash Number
041
Nominal CS
1/16
Inches CS
0.070
Nominal Size O.D.
3 1/8
Inches O.D.
3.129
Nominal Size I.D.
3
Inches I.D.
2.989
Inches I.D. Tol.
0.024
Inches CS Tol.
0.003
TEMPERATURE RANGE
-80°F to 350°F