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Flareless Union Fitting Caps diagram
Flareless Union Fitting CapsFlareless Union Fitting CapsFlareless Union Fitting CapsFlareless Union Fitting Caps diagram

FUF Series
Flareless Union Fitting Caps

Caplugs Flareless Union Fitting Caps (FUF Series) are designed to protect tube fittings in high vibration hydraulic systems typically found in aerospace and military aviation applications.

  • Designed to firmly seal any MS or AS flareless union fitting
  • Protects hydraulic parts and tubes during shipping from dust, debris and thread damage
  • Internal ribs create an internal seal that keeps any remnant hydraulic fluid from leaking during transport
  • Effectively seals without the use of an O-ring
  • Economical protection
  • Available in a variety of sizes
  • Internal ribs prevents hydraulic fluid from leaking


Material: Low-density polyethylene
Service Temperature: -94 - 175° F (-70 - 79° C)
Color: Red

Note: Micropack sizes have a 3 day lead time.

View parts with full dimensions below

Related Products:

Please take advantage of our free samples to test parts in your specific application/environment before ordering.
Item #To Fit Thread Size (IN)Dim A (IN)Dim B (IN)Dim C (IN)Dim D (IN)Dim E (IN) 
FUF-47/16 - 200.3220.4100.4430.1100.430
 
Color:
CAPLUG RED
Package:
MINIPACK-1000
Quantity:
Price:
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Color:
CAPLUG RED
Package:
MICRO-100
Quantity:
Price:
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Color:
CAPLUG RED
Package:
CARTON-5000
Quantity:
Price:
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FUF-51/2 - 200.3860.4680.5120.1100.430
 
Color:
CAPLUG RED
Package:
MINIPACK-1000
Quantity:
Price:
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Color:
CAPLUG RED
Package:
MICRO-100
Quantity:
Price:
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Color:
CAPLUG RED
Package:
CARTON-5000
Quantity:
Price:
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FUF-69/16 - 180.4610.5030.5540.1100.450
 
Color:
CAPLUG RED
Package:
MINIPACK-1000
Quantity:
Price:
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Color:
CAPLUG RED
Package:
MICRO-100
Quantity:
Price:
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Color:
CAPLUG RED
Package:
CARTON-5000
Quantity:
Price:
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FUF-83/4 - 160.6140.7180.7680.1400.540
 
Color:
CAPLUG RED
Package:
MINIPACK-1000
Quantity:
Price:
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Color:
CAPLUG RED
Package:
MICRO-100
Quantity:
Price:
Enter Qty
 
Color:
CAPLUG RED
Package:
CARTON-5000
Quantity:
Price:
Enter Qty
 
FUF-107/8 - 140.7470.8370.8940.1700.610
 
Color:
CAPLUG RED
Package:
MINIPACK-1000
Quantity:
Price:
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Color:
CAPLUG RED
Package:
MICRO-100
Quantity:
Price:
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Color:
CAPLUG RED
Package:
CARTON-5000
Quantity:
Price:
Enter Qty
 
FUF-121-1/16 - 120.8721.0131.0730.1700.610
 
Color:
CAPLUG RED
Package:
MINIPACK-500
Quantity:
Price:
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Color:
CAPLUG RED
Package:
MICRO-50
Quantity:
Price:
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Color:
CAPLUG RED
Package:
CARTON-2500
Quantity:
Price:
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FUF-161-5/16 - 161.1221.2701.3280.1700.610
 
Color:
CAPLUG RED
Package:
MICRO-25
Quantity:
Price:
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FUF-16A1-5/16 - 121.1041.2561.3280.1700.610
 
Color:
CAPLUG RED
Package:
CARTON-1250
Quantity:
Price:
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