The FOSC name has been synonymous with excellence in sealing, fiber management, ease of use, and design flexibility since the FOSC 100 closure was first introduced in 1986. FOSC closures have always been engineered specifically for fiber optic applications; they are not modified copper closures. The difference shows-ask someone who has worked with the product.

FOSC 400 closures combine proven fiber management hardware with a highly reliable sealing system. Base-to-dome seals on FOSC400 closures are mechanical for ease of installation and re-entry, and cable seals feature a unique Raychem heat-shrink sleeve and hot-melt adhesive system that is installed with a hot-air gun. Common materials, accessories, and practices are used throughout the product line to simplify training, reduce inventory, and enhance productivity.

FOSC 400 fiber optic splice closures are available in three sizes; the FOSC 400 A, FOSC 400 B, and FOSC 400 D. All sizes are designed for use with any cable construction (loose buffer tube, central core tube, loose fiber, and ribbon), in any environment (aerial, pedestal, buried, handhole, and manhole), and for numerous splice applications (express, tap-off, branch, and repair).

The FOSC 400 D5/B fiber optic splice closure is a hybrid product that offers the cable termination capacity of the FOSC 400 D5 closure and splice organizer trays from the FOSC 400 B closure. The result is an intermediate sized closure that can terminate 13 or more individual cables and is shorter to fit in confined spaces such as handholes and cabinets.

The FOSC 400 D5/B closure will hold up to 12 “B” size splice trays for a maximum single splice capacity of 288 fibers. This compares to 96 splices in a FOSC 400 B2 or B4 closure and 576 splices in a FOSC 400 D5 closure.

As with all FOSC 400 closures the D5/B is designed for use with any cable construction (loose buffer tube, central core tube, ribbon), in any outside plant environment (aerial, buried, handhole, manhole) and for numerous splice applications (express, tap-off, repair).

In fiber distribution networks, the ability to identify and splice selected fibers without disturbing other fibers is a competitive advantage. The FOSC 400 D5 FDP fiber distribution point terminal provides this capability.

Fibers from a distribution cable that may need to be accessed at a given location are prearranged on single circuit (two fiber) splice trays in an outside plant closure. When a new customer requests service, installers can quickly and accurately identify assigned circuits and splice in new drop or distribution cables without the risk of inducing transmission - affecting losses in adjacent working fibers.

The FOSC 400 D5 closure is the ideal platform for this application. It features a reliable and simple cable sealing system, a mechanical dome clamp for fast access, and a base that accepts multiple cable terminations without disturbing existing cable seals. This same closure platform can also be used to contain multiple splitters in individual trays for fiber to he home and business PON networks.

FOSC 400 FR fire resistant, fiber optic splice closures are made with a flame retardant material and can be used for splices in cable vaults and buildings.

All FOSC 400 closures have an easy-to-use mechanical clamping system for the dometo base seal. Cable ports are sealed with heat shrink tubing installed with a hot air gun. One size of cable seal can be used on any size or type of cable, in any round port and on any closure. New cables can be installed without disturbing existing cables or splices.

FOSC 400 closures are truly versatile and reliable platforms for any fiber optic cable terminations, outside and inside.

The industry leading FOSC 400 family of fiber optic splice closures is now available with gel seal technology for cable terminations. This new product line will be known as the FOSC 450 gel family of fiber optic splice closures. FOSC 450 gel splice closures have the same (or expanded) splice capacity as FOSC 400 closures and feature the same reliable and easy-to-use dome-to-base clamping system. The big difference with FOSC 450 gel closures is that the cable terminations use gel sealing technology instead of heat shrink. Gel seal cable terminations automatically adjust to cable size and shape, and they require no special tools, tapes or mastics to install. It is also easy to remove cables, and gel seals are completely re-usable.

The industry leading FOSC 400 family of fiber optic splice closures is now available with gelseal technology for cable terminations. This new product line will be known as the FOSC 450 gel family of fiber optic splice closures. FOSC 450 gel splice closures have the same (or expanded)splice capacity as FOSC 400 closures and feature the same reliable and easy-to-use dome to base clamping system. The big difference with FOSC 450 gel closures is that the cable terminations use gel sealing technology instead of heat shrink. Gel seal cable terminations automatically adjust to cable size and shape, they require no special tools, tapes or mastics to install. It is also easy to remove cables, and gel seals are completely re-usable.

The FOSC 600 C and D closures are more than just fiber optic splice closures. They are rugged and versatile platforms that can be deployed anywhere in the outside plant for a multitude of functions including the splicing of any type and size of cable, the housing of connectorized distribution and demarcation points, and the deployment of optical passives.

The sealing system for FOSC 600 closures builds on the proven reliability of FOSC 400 closures and features the versatile and popular gel seal technology for terminating cables and a unique latching system for quickly opening and closing the body.

XAGA FOSC fiber optic splice closures combine Tyco Electronic’s SuperSleeve sealing technology and versatile FOSC 400 fiber management system. The product is intended primarily for direct-buried splices and can be used anywhere a reliable, secure enclosure is required.

XAGA FOSC closures are designed for reel-end splices, branch splices, repair splices, and cable restoration. The closures have taut sheath capabilities and are available in several sizes and configurations. They can be used with any common cable construction and meet the same sealing specifications as the XAGA 1650 series of direct-buried copper closures. All XAGA FOSC closures can store expressed loose buffer tubes and stranded fiber with no additional components.

The XAGA FOSC A1 closure is designed for field splicing drops to distribution cables when storage of slack fiber is required. Bond wire and strength member attachments are provided for each cable. Options include external ground wires and flash test valves.

The XAGA FOSC B1 and B2 closures are for splicing fiber optic cables together at reel ends or branch points. Each closure will accept up to six cables and can be installed in a butt or in-line configuration.

The XAGA FOSC B2 closure has a double tray bank (B indicates the fiber organizer tray size, and 2 indicates two tray banks). The two tray banks double the splice capacity within the same diameter closure.

The XAGA FOSC B2 extension kit is used to extend an XAGA FOSC B2 closure. The length of the B2 closure can be varied to provide virtually any length of sheath opening that may be required to splice into a taut-sheath cable or to span a long area of damaged cable.