DeWalt 174053 O-Ring (20.8mm x 2.4mm) – Genuine OEM Replacement Nailer O-Ring

Part Number: 174053
Category: Nailer Parts & Accessories → Pneumatic Nailer Parts → O-Rings & Seals
Type: DeWalt 174053 O-Ring (20.8mm × 2.4mm) – Genuine OEM Replacement Nailer O-Ring

The DeWalt 174053 O-Ring is a genuine OEM replacement sealing ring designed for compatible DeWalt, Bostitch, and Black & Decker pneumatic nailers. Measuring 20.8 mm × 2.4 mm, this precision-engineered O-ring creates an airtight seal between internal pneumatic components, helping maintain proper air pressure, firing performance, and overall tool efficiency. Manufactured to original equipment specifications, it provides a direct-fit replacement for worn, cracked, or damaged seals, helping restore dependable operation and reduce air leakage.

Key Features & Benefits

• Part Number: 174053
• Genuine OEM DeWalt replacement part
• Replacement pneumatic nailer O-ring
• Dimensions: 20.8 mm × 2.4 mm
• Helps maintain airtight seals between internal components
• Reduces air leakage and pressure loss
• Supports reliable firing performance
• Precision-molded rubber construction
• Direct-fit OEM replacement
• Manufactured to original equipment specifications

Technical Specifications

Part Number: 174053

Manufacturer: DeWalt

Product Type: O-Ring

OEM Part: Yes

Dimensions: 20.8 mm × 2.4 mm

Application: Pneumatic Nailer Air Sealing System

Compatible Applications

The DeWalt 174053 O-Ring fits select:

Bostitch

• MCN250S 35° Metal Connector Framing Nailer Strapshot (Type 0)
• CF15 Corrugated Tool (Type 0)
• MCN150 Strapshot Metal Connector Nailer (Type 0)
• N66C-1 1-1/4" to 2-1/2" Coil Siding Nailer with Aluminum Housing (Type 072400000 and Higher)
• N66C-1 1-1/4" to 2-1/2" Coil Siding Nailer with Aluminum Housing (Type 62860000 and Higher)
• N66BC-1 Cap Nailer (Type 0)
• N75C-1 15° Coil Sheathing & Siding Nailer (Type 0)
• MCN250 35° Metal Connector Framing Nailer Strapshot (Type 0)

Black & Decker

• FMFP12704 15° Roofing Nailer (Type 0)

DeWalt

• DWMC150 1.5" Metal Connector Nailer (Type 1)
• DW66C-1 15° Coil Siding Nailer (Type 0)
• DW66C-1 Air Nailer & Stapler (Type 17300000 and Higher)

Always verify your tool model, type number, and original part number before ordering to ensure proper compatibility.

Function of the O-Ring

The DeWalt 174053 O-Ring serves as a pneumatic sealing component within the nailer. It helps to:

• Create an airtight seal between internal components
• Maintain proper operating air pressure
• Prevent air leaks during firing cycles
• Support consistent driving power
• Improve pneumatic efficiency
• Restore the tool's original sealing performance

Using a genuine OEM replacement O-ring helps ensure proper fit, dependable sealing, and long-term tool reliability.

Common Signs Replacement Is Needed

Replace the O-ring if you notice:

• Air leaking from the tool
• Reduced driving power
• Inconsistent nail depth
• Cracked, flattened, or brittle seal
• Excessive compressor cycling
• Air escaping around internal components during operation

A worn or damaged O-ring can reduce pneumatic efficiency, decrease driving performance, and contribute to premature wear of internal components.

Installation & Service Notes

Disconnect the pneumatic nailer from the air supply before performing any repairs.

Disassemble the tool according to the manufacturer's service instructions to access the 174053 O-Ring. Carefully remove the old seal without damaging the sealing groove. Clean the mating surfaces and inspect surrounding components for wear or damage before installing the replacement O-ring. Apply a light coating of pneumatic tool lubricant if recommended by the manufacturer, then install the new O-ring without twisting or overstretching it. Reassemble the tool and test for proper operation and air-tight sealing before returning it to service.

Important: Always verify your tool model, type number, and original part number before ordering. Use genuine OEM DeWalt replacement seals to ensure proper fit, reliable pneumatic performance, and long-term tool durability.

Maintenance Recommendations

• Lubricate pneumatic tools according to the manufacturer's recommendations.
• Inspect O-rings whenever the tool is disassembled for service.
• Replace worn or damaged seals promptly to prevent air leaks.
• Keep internal sealing surfaces clean and free of debris.
• Avoid using petroleum-based lubricants unless specified by the manufacturer.
• Use genuine OEM replacement parts to maintain factory sealing performance, consistent driving power, and long-term pneumatic tool reliability.