FieldShield Pushable Optical Fiber is a durable and crush resistant product that is suitable for most indoor or outdoor environments, and is ideal when drop cable distances are over 300'. Manufactured using PBT jacketing, pushable optical fiber offers flexibility as well as resistance to chemicals. FieldShield Pushable Optical Fiber is typically recommended to be used in conjunction with FieldShield Microduct. 

Technical Specifications

Physical Characteristics

Clad Diameter 125.0 ± 0.7 μm
Clad Non-circularity ≤ 1%
Core/Clad Concentricity Error ≤ 0.5 μm maximum, < 0.2 μm typically
Coating Diameter (Uncolored) 235 - 245 μm
Coating-Clad Concentricity Error (Offset) ≤ 12 μm
Tensile Proof Test 100 kpsi (0.69 GPa)
Coating Strip Force Range ≥ 0.3 lbf < 2.0 lbf (≥ 1.3 N < 8.9 N)
Cable Spec 0.35 dB/km @ 1,310 nm/0.25 dB/km @ 1,550 nm

Environmental Characteristics

Temperature Cycling (-60°C + 85°C) ≤ 0.05 dB/km
High Temperature Aging (85 ± 2°C) ≤ 0.05 dB/km
Temperature & Humidity Cycling(at -10°C to 85°C and 95% RH) ≤ 0.05 dB/km
Water Immersion (23 ± 2°C) ≤ 0.05 dB/km
Fiber OFS All Wave Flex + Fiber Markings or equivalent
Water Peak ZWP (Zero Water Peak)
Bend-Insensitive Bend-Insensitive Fiber G.657.A2
Color Code TIA/EIA 598 (US Standard)

1, 2, 6 and 12-fiber: maximum spool length 10,000 feet

24-fiber: maximum spool length 10,000 feet

48-fiber: maximum spool length 5,000 feet

Fiber Count Any fiber count up to 48 fibers
Pushable Connectors FieldShield SC/UPC, SC/APC, Simplex and Duplex LC/UPC, Simplex and Duplex LC/APC, MPO
Mode Singlemode
Outside Diameter

1 to 12-fiber: 0.118" (3 mm)

24-fiber: 0.156” (4 mm)

48-fiber: 0.217” (5.5 mm)

Color Black
Material PBT
Bend-Radius 10 mm minimum
Operating Temperature -40°F to 176°F (-40°C to 80°C
Installation Temperature -14°F to 158°F (-26°C to 70°C)
Installation Tension 20 lbf for 3 mm; 20 lbf for 4 mm
Markings Part number, lot number and footage markers every two feet

Features & Benefits


  • Available in singlemode
  • Supports all industry standard connectors


  • Bend-insensitive (G.657.A2) fiber protects optical signal with minimal to zero attenuation down to a 10 mm radius
  • Tough PBT jacketing provides high column strength and low coefficient of friction to maximize push and pull distances
  • Lightweight and high crush resistance 
  • One and two fiber drops protected by water blocking Kevlar strength member
  • 6 to 48-fiber utilize water blocking gel


  • Standard color is black
  • Tech-friendly 250 μm fiber inside the outer jacket reduces splicing steps and installation costs
  • Suitable for all types of indoor and outdoor implementations


  • Pushes directly into a Clearview® Cassette, FieldShield is optimized for placement alongside Clearfield® FieldSmart® fiber management platforms
  • Quick and easy deployment allows capital investment to be aligned to customer take rates
  • Available in multiple fiber counts up to 48 fibers