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

Parco’s 4900-70 nitrile seals are ideal for use in a variety of general-purpose applications. Key features include the following: • Outstanding resistance to compression set: Parco 4900-70 seals had a compression set of only 14 percent after 22 hours at 212°F. • Wide range of service temperatures: Parco 4900-70 seals are suitable for applications ranging from -30 to +212°F.

Chemical Resistance

USE WITH

Automatic Transmission Fluid Crude Oil Gasoline Propane Water

DO NOT USE WITH

Acetone Carbon Tetrachloride Ethyl Acetate Nitromethane Toluene

Typical Values for Compound

Physical Property	Requirements	Result	ASTM Test Method

Original Properties
Specific gravity	1.30 to 1.34	1.33	D297
Hardness, Shore A, min.	68	80	D2240
Tensile strength, psi, min.	1350	1791	D1414
Ultimate elongation, pct., min.	160	162	D1414
Modulus at 100 pct. elongation, min.	500	1015	D1414
TR-10, °C(°F), max.	-45(-49)	-48(-54)	D1329

Corrosion and Adhesion			Para 4.6.3
QQ-A-250/4 Aluminum Alloy 2024	None	None	D1414
QQ-A-250/11 Aluminum Alloy 6061	None	None
QQ-A-250/12 Aluminum Alloy 7075	None	None
AMS 5630 440C Stainless Steel	None	None
AMS 5513 304 Stainless Steel	None	None
Mil-S-18729 4130 Steel	Slight Corrosion	Slight Corrosion

Fluid Aging, MIL-PRF-5606			D471
70 hours at 135°C(275°F)			D1414
Hardness change, Shore A	-15 to 5	-9
Tensile strength change, pct., max.	-50	-28.69905081
Ultimate elongation change, pct., max.	-35	-30.86419753
Volume change, pct.	1 to 20	12
Compression Set
pct. of original deflection, max.	55	34
TR-10, °C(°F), max.	-45(-49)	-48(-55)

Fluid Aging, MIL-PRF-83282			D471
70 hours at 135°C(275°F)			D1414
Hardness change, Shore A	-10 to 10	1
Tensile strength, pct., max.	-40	-23.78559464
Ultimate elongation, max.	-45	-45.0617284
Volume change, pct.	0.5 to 15	2
Compression Set
pct. of original deflection, max.	55	54
TR-10, °C(°F), max.	-44(-47)	-47(-53)