Large-scale industrial penetrations, such as heavy-duty ventilation ducts, plumbing soil stacks, and mechanical exhaust piping, operate under rigorous structural stresses. Standard roof penetrations are continuously subjected to localized vibration, building settlement, and severe wind shear. When rigid sealing solutions are utilized, these persistent dynamic movements crack the flashing interfaces, allowing catastrophic moisture intrusion into commercial roofing matrices.

The YS-14 mid-range roof flashing delivers an engineered flexible countermeasure, specifically structured to isolate and seal medium-diameter pipe lines from 3-3/4" to 7-3/4" (95 mm to 197 mm).

Advanced Material Compound Engineering

To endure critical macro-climatic wear, the construction of the YS-14 utilizes a high-spec integrated compound layout:

Elastomeric Flexible Collar: Formulated in high-stability EPDM or thermal-grade Silicone. The EPDM base guarantees uncompromising ozone resistance and UV aging stability. The alternative Silicone polymer is rated for high-temperature stacks up to 240 degrees Celsius, sustaining long-term tensile flexibility.

Technical Specifications

Product Model: YS-14

Applicable Pipe Range: 3-3/4" to 7-3/4" (95 mm to 197 mm)

Base Plate Dimensions: 275 mm x 275 mm

Material Chemistry: EPDM + Aluminum / Silicone + Aluminum

Compliance Matrix: RoHS Compliant, 100 Units Minimum Order Quantity

Field Installation Mechanics

Preserving long-term interface sealing depends entirely on precise cutting calibration. Installers must trim the stepped cone to a diameter slightly smaller than the pipeline to establish a rigorous compression fit. 

Frequently Asked Question:
How does the YS-14 tolerate thermal pipe expansion?
The deep, concentric bellows configuration functions as an expansion joint, accommodating vertical and lateral pipe expansions without transferring stress to the roofing substructure.