18987982-1-M-DeWALT-904689-SEAL
Part Location Diagram of 904689 DeWALT SEAL
See part 112 in the diagram
( Grid squares measure 1x1 inch )
18987982-1-S-DeWALT-904689-SEAL Part Location Diagram of 904689 DeWALT SEAL

SEAL 904689

$6.20
Special Order
Fix Number:
FIX18987982
Manufacturer #:
904689
Manufactured by:
DeWALT

Jump to:

Product Description

This is a single head valve seal for a nailer. This part is installed in the top of the cylinder and creates a seal for the head valve. If air is leaking from the top of the nail gun, it could be due to a damaged head valve seal. To access this part, you will need to remove the top cap. Gaskets such as this should only be used once for a secure seal, so if you have removed this part, it will need to be replaced.

  • Works with the following brands:
    Porter Cable
  • Works with the following products:
    Nailer
  • Part# 904689 replaces these:
    904689
Works with the following brands:
Porter Cable
Works with the following products
Nailer
Part Number Cross Reference
Part# 904689 replaces these:
904689

Questions and Answers

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HEAD VALVE BODY
★★★★★
★★★★★
(10)
$2.99
In Stock
Part Number: FIX12417689
This is a genuine head valve for nailers and staplers. The head valve is responsible for controlling the flow of air to the cylinder. When the trigger is pulled, it creates an imbalance of pressure, which opens the head ...
HEAD VALVE BODY
★★★★★
★★★★★
(10)
$2.99
In Stock
Part Number: FIX12417689
This is a manufacturer-approved replacement head valve and is sold independently. It controls the amount of air that enters the cylinder when the trigger is initiated. This action creates an imbalance in pressure between...
O-RING
★★★★★
★★★★★
(1)
$2.99
In Stock
Part Number: FIX18990553
This is an O-ring for a nailer. It is sold individually and is made of a clear rubber material. This O-ring sits between the HD, valve piston and gasket head, which can be accessed by removing the housing cap. O-rings ar...
PISTON STOP
$15.48
In Stock
Part Number: FIX18987979
This piston stop is for nailers. The piston stop provides a cushion for the piston. Wear work gloves to protect your hands when installing this part.
O-RING
$2.99
In Stock
Part Number: FIX18987450
This is an O-ring for a nailer/stapler, and it is sold individually. It is sourced right from the original manufacturer, ensuring proper fit and function. O-rings are a general wear part and will require replacing from t...
HOUSING CAP
$21.56
In Stock
Part Number: FIX18990568
This is a high-quality component which is designed for use with Porter Cable nailers and staplers. It is supplied from the original equipment manufacturer. The housing cap is secured in the back of a nailer to ensure a t...
O-RING (29.5 X 2 (S3
$3.36
Special Order
Part Number: FIX18987980
It is a genuine item that is supplied by the original equipment manufacturer for use Porter Cable nailers. This is an identical replacement for a missing or a worn o-ring was installed on a new unit, please make sure to ...
PISTON RING
$5.80
In Stock
Part Number: FIX18987792
This part includes one metal OEM piston ring, used in nailers and staplers. It attaches to the top of the piston/connecting rod. It creates a seal in the cylinder, which helps to build pressure. A damaged piston ring wil...
PIN
$4.85
In Stock
Part Number: FIX18987995
This item is a genuine Porter Cable part that has been sourced from the original manufacturer to be used with pneumatic nailers. The pin is used to mount the driver guide cover and to provide a pivot point for the cover....
PISTON RING
$6.63
In Stock
Part Number: FIX18987984
This is an authentic part from Porter Cable. This piston ring is to be used in Porter Cable Finish Nailers. The piston ring is installed next to the o-ring and prevents air from leaking out of the device. This item is so...
PAD
$5.58
In Stock
Part Number: FIX18988001
This is an Original OEM replacement part designed for use with Porter Cable Nailer. This part is made out of Plastic and it is Sold Individually. The Nose Cap is attached to end of the Safety Element to prevent the mater...
O-RING (31 X 2 (2031
$3.77
In Stock
Part Number: FIX18987985
This replacement o-ring is an authentic OEM sourced part that is specially designed for Porter Cable finishing nailers. The purpose of this o-ring is to provide and air tight seal between the piston and the cylinder wall...
GASKET
$9.59
In Stock
Part Number: FIX18987983
It is a genuine OEM sourced replacement part designed for a Porter Cable nailer. This gasket provides an air-tight seal for the exhaust cover. Over time gaskets tend to shrink, become brittle and crack eventually requiri...
WASHER-BEARING
$2.99
In Stock
Part Number: FIX18987990
An authentic item which is supplied directly from the original equipment manufacturer for use with Porter Cable nailers. It is a special washer which is utilized to provide a tight seal for the piston stop, please make s...
Affresh Dishwasher Cleaner Tablets - 6
$21.89
In Stock
Part Number: FIX12345667
Affresh dishwasher Cleaner is specially formulated to help remove limescale and mineral build-up that can be unsightly and could affect your dishwasher's performance. Each tablet is designed to clean inside your machine ...
Affresh Washing Machine Cleaner - 3 pack
$19.89
In Stock
Part Number: FIX1960673
This washing machine cleaner includes three time-release tablets designed to remove odor-causing residues, grime, and buildup from high-efficiency and top-load washing machines. The tablets work by cleaning the tub, pump...
Produce Preserver Filter
$17.75
In Stock
Part Number: FIX3503014
Fresh Flow Produce Preserver is made for your refrigerator to help keep produce fresh for longer by absorbing the chemical, ethylene, that causes your fruits and vegetables to ripen quicker. Your produce could be fresh f...
Affresh Washing Machine Cleaner Tablets – 6 Count
$27.87
In Stock
Part Number: FIX12345661
This Affresh Washing Machine Cleaner deep cleans to help remove the odor-causing residues and grime that daily loads leave behind. The time-release tablets are EPA Safer Choice certified, septic-safe and designed to clea...
Refrigerator Deodorizer
$29.78
In Stock
Part Number: FIX12739141
Refrigerator deodorizers help to reduce bacteria growth and therefore reduce smells and extend the life of food.
Affresh Ice Machine Cleaner
$26.87
In Stock
Part Number: FIX12583750
This nickel-safe, unscented ice machine cleaner measures 16 fluid ounces and is used to remove mineral build-up and hard water and is compatible with several makes and models of freestanding ice machines. To use properly...
O-RING (29.5 X 2 (S3
$3.36
Special Order
Part Number: FIX18987980
It is a genuine item that is supplied by the original equipment manufacturer for use Porter Cable nailers. This is an identical replacement for a missing or a worn o-ring was installed on a new unit, please make sure to ...
PISTON RING
$5.80
In Stock
Part Number: FIX18987792
This part includes one metal OEM piston ring, used in nailers and staplers. It attaches to the top of the piston/connecting rod. It creates a seal in the cylinder, which helps to build pressure. A damaged piston ring wil...
PIN
$4.85
In Stock
Part Number: FIX18987995
This item is a genuine Porter Cable part that has been sourced from the original manufacturer to be used with pneumatic nailers. The pin is used to mount the driver guide cover and to provide a pivot point for the cover....
PISTON RING
$6.63
In Stock
Part Number: FIX18987984
This is an authentic part from Porter Cable. This piston ring is to be used in Porter Cable Finish Nailers. The piston ring is installed next to the o-ring and prevents air from leaking out of the device. This item is so...
PAD
$5.58
In Stock
Part Number: FIX18988001
This is an Original OEM replacement part designed for use with Porter Cable Nailer. This part is made out of Plastic and it is Sold Individually. The Nose Cap is attached to end of the Safety Element to prevent the mater...
O-RING (31 X 2 (2031
$3.77
In Stock
Part Number: FIX18987985
This replacement o-ring is an authentic OEM sourced part that is specially designed for Porter Cable finishing nailers. The purpose of this o-ring is to provide and air tight seal between the piston and the cylinder wall...
GASKET
$9.59
In Stock
Part Number: FIX18987983
It is a genuine OEM sourced replacement part designed for a Porter Cable nailer. This gasket provides an air-tight seal for the exhaust cover. Over time gaskets tend to shrink, become brittle and crack eventually requiri...
WASHER-BEARING
$2.99
In Stock
Part Number: FIX18987990
An authentic item which is supplied directly from the original equipment manufacturer for use with Porter Cable nailers. It is a special washer which is utilized to provide a tight seal for the piston stop, please make s...
Affresh Dishwasher Cleaner Tablets - 6
$21.89
In Stock
Part Number: FIX12345667
Affresh dishwasher Cleaner is specially formulated to help remove limescale and mineral build-up that can be unsightly and could affect your dishwasher's performance. Each tablet is designed to clean inside your machine ...
Affresh Washing Machine Cleaner - 3 pack
$19.89
In Stock
Part Number: FIX1960673
This washing machine cleaner includes three time-release tablets designed to remove odor-causing residues, grime, and buildup from high-efficiency and top-load washing machines. The tablets work by cleaning the tub, pump...
Produce Preserver Filter
$17.75
In Stock
Part Number: FIX3503014
Fresh Flow Produce Preserver is made for your refrigerator to help keep produce fresh for longer by absorbing the chemical, ethylene, that causes your fruits and vegetables to ripen quicker. Your produce could be fresh f...
Affresh Washing Machine Cleaner Tablets – 6 Count
$27.87
In Stock
Part Number: FIX12345661
This Affresh Washing Machine Cleaner deep cleans to help remove the odor-causing residues and grime that daily loads leave behind. The time-release tablets are EPA Safer Choice certified, septic-safe and designed to clea...
Refrigerator Deodorizer
$29.78
In Stock
Part Number: FIX12739141
Refrigerator deodorizers help to reduce bacteria growth and therefore reduce smells and extend the life of food.
Affresh Ice Machine Cleaner
$26.87
In Stock
Part Number: FIX12583750
This nickel-safe, unscented ice machine cleaner measures 16 fluid ounces and is used to remove mineral build-up and hard water and is compatible with several makes and models of freestanding ice machines. To use properly...
View Less

Model Compatibility

This part works with the following models:
Fix Number: FIX18987982
Manufacturer Part Number: 904689
Brand Model Number Description
Porter Cable FN250B Nailer - 16 Gauge Finish Nailer
Porter Cable FN251 Nailer - 53444
SEAL
$ 6.20
  Special Order
Stock Status
 In Stock

Item is in stock and will ship today if your order is placed before 4:00 PM Eastern Standard Time.

If your order is placed after 4:00 PM EST, the in stock items will ship on the next business day.

 On Order

Item is not in stock and usually ships 3-5 business days from the time you place your order.

 Special Order

Item is not in stock and usually ships 10-15 business days from the time you place your order.

 NLA - No Longer Available

This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.