Aztec Washer Company RD501BE - Universal Master Flash Round Flashing - (3 1/2 in. - 7 3/4 in.)

The Aztec Washer RD501BA Extreme Angle Master Flash is a large flashing designed for steep metal roofs with slopes between 35° and 65°. Made from black EPDM, it provides long-lasting resistance to UV, ozone, and weathering. The built-in 40° pitch allows the flashing to align properly on steep roof angles, while the flexible, trim-to-fit sleeve ensures a watertight seal for pipe penetrations from 3-1/2 in to 7-3/4 in.

Key Features:

• Black EPDM compound engineered for durability and weather resistance.
• Built-in 40° pitch adapts to steep roof slopes from 35° to 65°.
• Trim-to-fit sleeve with pipe diameter markings for accurate cutting.
• 10-1/2 in base molds to roof profiles for a secure, watertight fit.

• Part number: RD501BA
• Material: Black EPDM
• Pipe range: 3-1/2 in to 7-3/4 in (89–197 mm)
• Base size: 10-1/2 in (267 mm)
• Application: Large pipe penetrations on steep slope metal roofs
• Temperature guidance: EPDM up to 212 °F (100 °C) continuous, 275 °F (135 °C) intermittent
• Warranty: 20 years (EPDM)

Q: What type of sealant should be used with RD501BA?
A: Use urethane or silicone sealant. Avoid petro-chemical-based sealants.

Q: What roof pitch is RD501BA designed for?
A: It is designed for steep roof slopes between 35° and 65°.

Q: What pipe sizes can RD501BA handle?
A: It accommodates pipes from 3-1/2 in to 7-3/4 in (89–197 mm).

Q: Is RD501BA suitable for high-temperature applications?
A: EPDM is rated up to 212 °F (100 °C). For hotter applications, silicone versions are recommended.