Eaton TWBS5027 Thru-Wall Barrier Sealing Block - Elastomeric Marine
Part Number: TWBS5027
Quick Summary
TWBS5027 is a thru-wall barrier sealing block assembly for marine electrical enclosures and conduit sealing. In rugged marine installations, professionals often contend with unreliable seals and misfit penetrations across 2.250–2.500 inch openings. This design aligns with UL Canadian certifications for firestop devices and supports ordinary/non-hazardous locations, reinforcing regulatory compliance. For project teams, the elastomeric material and standardized five frame spaces simplify procurement and field assembly, while the two openings provide flexible routing. By reducing leak paths and installation time, TWBS5027 delivers measurable value in ongoing maintenance, safety, and overall project efficiency.
Product Information
Extended Description
TWBS5027 Eaton: Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly, Elastomeric, 5 frame spaces required, 2 openings in block, Opening size range: 2.250-2.500", For marine applications
Product Name
Eaton Crouse-Hinds series Thru-Wall Barrier TWB sealing block assembly
Catalog Number
TWBS5027
UPC
782274277295
Product Length/Depth
13.5 in
Product Height
4.5 in
Product Width
7.88 in
Product Weight
21.73 lb
Area classification
Ordinary/Non-Hazardous Locations
Opening size range
2.250-2.500"
Number of openings in block
2
Number of frame spaces required
5
Material
Elastomeric
Type
For marine applications
Crouse-Hinds series Thru-Wall Barrier Cable and Conduit Sealing Device catalog page
Thru-Wall Barrier Cable and Conduit Sealing Device Canadian certification
Thru-Wall Barrier Cable and Conduit Sealing Device Canadian certification
Thru-Wall Barrier Cable and Conduit Sealing Device Canadian certification
IF 1020 - TWBS Sealing Block for TW series Thru-Wall Barrier
Eaton Specification Sheet - TWBS5027
Elastomeric sealing material delivers resilient, moisture-tolerant performance that adapts to slight misalignments and vibration. Business impact: reduced leak risk, extended service life, and lowered maintenance costs. Application: marine penetrations and conduit seals where dependable sealing is critical. Opening size range of 2.250–2.500 inches and two openings in the block provide flexible routing options. Business impact: simplifies design decisions, accelerates installation, and reduces total parts count. Application: penetrations for multiple conduits in TW-series systems across marine and industrial environments. Five frame spaces required standardize installations, enabling faster BOMs and easier inventory management. Business impact: fewer field errors and streamlined procurement. Application: shipboard panels and offshore enclosures. Designed for marine applications, TWBS5027 is tailored for ordinary/non-hazardous locations, delivering robust sealing where it matters most. Certification visibility ensures regulatory acceptance, while installation documentation supports consistent field practices. Business impact: predictable project compliance and reduced rework. Application: contractor workflows and maintenance programs.
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FAQs
TWBS5027 is designed to pair with the TW series Thru-Wall Barrier components. Start by verifying a 2.250–2.500 inch opening, then align the sealing block with the frame spaces (five required). Use the provided installation instructions IF 1020 as a reference, ensure seals are seated evenly, and verify the two openings accommodate the required conduits. This standardization minimizes on-site adjustments and accelerates commissioning in marine panels.
Key specs include elastomeric material, two openings in the block, opening size range 2.250–2.500 inches, and five frame spaces. The footprint measures 13.5 inches in length, 4.5 inches in height, and 7.88 inches in width, with a weight of 21.73 lb. The elastomeric seal enhances moisture resistance and vibration tolerance, improving long-term integrity in harsh environments such as ships and offshore platforms.
Yes. TWBS5027 is explicitly designed for marine applications and is classified for Ordinary/Non-Hazardous Locations. This makes it suitable for shipboard penetrations and other non-hazard-intensive environments, while still providing robust barrier performance against moisture and contaminants common in coastal and offshore settings.
TWBS5027 supports UL Canadian certifications for firestop devices and is specified for ordinary/non-hazardous locations. Documentation includes Canadian certification references and access to installation sheets and spec pages from Eaton, ensuring alignment with regulatory and project-approval requirements.
The elastomeric sealing, standard five-frame design, and dual openings reduce field rework and part complexity, delivering faster assemblies and lower labor costs. Its marine suitability and UL Canadian certifications help streamline approvals, minimize warranty risks, and improve maintenance predictability, delivering measurable lifecycle cost savings over traditional sealing solutions.