Aztec Washer Company RD401GG - Universal Master Flash Round Flashing - (2-1/4 in. - 6 1/4 in.)

The Aztec Washer RD401GA Extreme Angle Master Flash is a medium-to-large size flashing for steep roof slopes between 35° and 65°. Manufactured from gray EPDM, it resists UV, ozone, and weathering for long service life. The built-in 40° pitch allows proper fit on extreme slopes, while the flexible, trim-to-fit sleeve ensures a watertight seal for pipe penetrations from 2-1/4 in to 6-1/4 in. Its 9-1/4 in base conforms securely to roof panel profiles.

Key Features:

• Gray EPDM material for long-term resistance to UV, ozone, and weathering.
• Built-in 40° pitch adapts to steep roof slopes between 35° and 65°.
• Trim-to-fit sleeve with size markings for accurate installation.
• Compact 9-1/4 in base seals medium-to-large pipe penetrations securely.

• Part number: RD401GA
• Material: Gray EPDM
• Pipe range: 2-1/4 in to 6-1/4 in (57–159 mm)
• Base size: 9-1/4 in (235 mm)
• Application: Medium-to-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 RD401GA?
A: Use urethane or silicone sealant. Avoid petro-chemical-based sealants.

Q: What roof pitch is RD401GA designed for?
A: It is designed for steep roof slopes between 35° and 65°.

Q: What pipe sizes can RD401GA handle?
A: It fits pipe diameters from 2-1/4 in to 6-1/4 in (57–159 mm).

Q: Is RD401GA suitable for high-temperature applications?
A: EPDM is suitable up to 212 °F (100 °C). For hotter applications, silicone versions are recommended.