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Entry Seals

Wedge Entry Seal Duct Plugs & Fibre Optic Simplex Plugs

Manufactured by Cal Am Manufacturing – Distributed by Cable Accessories Ltd

Comprehensive Sealing Solutions for Conduit, Duct, and Fibre Systems

Cable Accessories Ltd is the Irish distributor for Cal Am Manufacturing, a U.S. company specialising in advanced mechanical sealing systems for telecom, data centre, utility, and civil infrastructure applications.

We supply a full range of Wedge Entry Seal Duct Plugs and Fibre Optic Simplex Plugs, designed to provide airtight, watertight, and corrosion-resistant seals for both new installations and retrofit applications.

These products offer a clean, professional, and long-lasting alternative to foam or tape sealing methods, protecting underground duct banks, manholes, and innerduct systems from water, sediment, and gas ingress.

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Reliable, Retrofit-Ready Sealing for Duct and Innerduct Systems

Cal Am Wedge Entry Seals are engineered for simple and secure conduit sealing whether blank, single-port, or multi-port. Their split design allows installation around existing cables or ducts without the need to cut or remove them, making them ideal for retrofit applications.

Manufactured from polyvinyl chloride (PVC) and thermoplastic elastomer (TPE) components with stainless steel fasteners, Wedge Entry Seals deliver a robust, corrosion-proof performance and are suitable for both above and below ground environments.

Key Features

  • Water, air, and corrosion-resistant
  • Quick and clean installation — no foam or sealants required
  • Split design for retrofit around existing cables
  • Provides structural cable support and organisation
  • Suitable for telecom, electrical, and data centre manholes
  • Constructed from recyclable and long-life materials
  • Available in Simplex (1-port), Triplex (3-port), and Quadplex (4-port) versions

Available Sizes

  • Conduit I.D. range: 50 mm to 200 mm
  • Port diameters: 18 mm to 70 mm, depending on configuration
  • Includes Jack Moon cross-referenced part numbers for seamless replacement

The latest 50 mm Simplex Entry Seal is purpose-designed for small fibre and microduct applications, supporting cable diameters from 27 mm to 33 mm.

Compact, Reusable Plugs for Small Diameter Ducts

Cal Am Fibre Optic Simplex Plugs (formerly Jack Moon design) are specifically made for sealing single-fibre or small cable conduits. These plugs protect and terminate ducts containing one line — ideal for fibre optic, coaxial, or twisted pair cables.

Their expandable gasket system forms a tight, reliable seal around the cable to prevent the ingress of air, water, or dust, maintaining system integrity in both building and outdoor environments. They are also reusable and hand-installable, making them perfect for retrofit or upgrade works.

Key Features

  • Water and air resistant with an expandable elastomer gasket
  • No tools required – installs and removes by hand
  • Reusable and retrofit compatible
  • Riser-rated for internal building applications
  • Wide cable sealing range covering 2 mm to 27 mm
  • Innerduct sizes from 25 mm to 50 mm conduit diameter
  • Jack Moon part number cross-reference for legacy compatibility
  • Fibre optic and broadband networks
  • Data centres and telecommunications ducts
  • Utilities and local authority infrastructure
  • Building risers and conduit transitions
  • Electrical and telecom manholes
  • Industrial and civil duct sealing
  • Authorised Irish distributor for Cal Am Manufacturing
  • Extensive product knowledge and application support
  • Assistance with correct sizing and selection
  • Documentation, drawings, and specification support for project approval

Decades of experience serving telecom, data, and utility infrastructure markets

Below you will find:

  • Cal Am Wedge Entry Seal Ordering Guide
  • Cal Am Fibre Optic Simplex Plug Ordering Guide
  • Installation Instruction Manuals

Cal Am Wedge Entry Seals and Fibre Optic Simplex Plugs – proven sealing solutions designed for performance, flexibility, and ease of use.

Supplied and supported in Ireland by Cable Accessories Ltd.

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