4" Class 300 Flange Stud Hole Insert - Black LDPE

Stud hole insert cap for 4" 300 Class flanges, manufactured in high-density polyethylene to protect flange faces and bolt holes.

This flange protector features four ribs that push into the stud holes around a flange face, offering an alternative to full-bore protectors. The design shields the critical gasket sealing surface from moisture, dirt, paint, oils and physical damage during production, transportation, storage and maintenance work. It is quick to fit and cost-effective for protecting expensive flange assemblies.

Key Features

• Four stud hole ribs grip securely into flange bolt holes
• High-density polyethylene (LDPE) construction
• Resists moisture, dirt, paint and most oils
• Easy and quick to install without tools
• Durable and reusable protection
• Cost-effective alternative to replacement or repair

Specifications

• Nominal flange size: 4"
• Pressure rating: 300 Class
• Material: Black LDPE

Applications

• Oil and gas refining operations
• Hydraulic systems and equipment
• Flange protection during production and assembly
• Storage and inventory protection
• Transit and logistics