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Low K-200 is a range of thermal and acoustical insulation products fabricated from lightweight, fire-resistant polyimide foam. Open-cell foam is available for thermal and acoustical hullboard, pipe covering, and transmission-loss treatment. Closed-cell foam is available for anti-sweat hull treatment.



  • Shipboard hulls, bulkheads, overheads, and ducts requiring thermal and/or acoustical treatment per DOD-I-24688

  • Submarine hull and frame sections requiring sound transmission-loss treatments. TLT-DB is the U.S. Navy’s approved alternate to MIL-T-24708.



  • Weight reduction: Lightweight polyimide foam offers substantial weight savings.

  • Fewer mechanical fastening devices required

  • Polyimide foam is inherently fire resistant, thus yielding longer burn-through times, low surface-burning characteristics, very low smoke developed, and no significant toxic off-gassing.

  • Full approval by the U.S. Navy

  • Factory-applied facings and jacketings include glass cloth, aluminized mylar, Tuffskin, perforated glass cloth, and others.

  • Improved habitability and increased resistance to abuse and water damage

  • Shipboard chilled-water lines and systems up to 100 °F. Vapor barrier jacketing or lagging is required per MIL-STD 769 and MIL-STD 635.


  • Low K-200 Plain: Unfaced polyimide foam. Meets DOD-I-24688, TY-I.

  • Low K-200 CF (Cloth Faced): Faced with fiberglass cloth per MIL-C-20079, TY-II, CL-1. Meets DOD-I-24688, TY-II, CL-1.

  • Low K-200 GRVD (Grooved): Grooved/slotted and faced with perforated fiberglass cloth per MIL-C-20079, TY-II, CL-1. Meets DOD-I-24688, TY-II, CL-2.

  • Low K-200 AM (Aluminized Mylar): Faced with aluminized mylar

  • Low K-200 TS (Tuffskin): Faced with fiberglass scrim reinforced mylar per MIL-I-22023, TY-III. Meets DOD-I-24688, TY-I

  • Low K-200 Foil: Faced with 2-mil aluminum foil



  • DOD-I-24688

  • MIL-T-24708

  • MIL-I-24244

Low K-200 Polyimide Foams Data Sheet

Low K-200 Antisweat Data  Sheet

CC-306 Open Cell Polyimide Foam Data Sheet


TLT-DB is the U.S. Navy's choice for MIL-T-24708.


Low-K 200 pipe covering is available in a variety of pipe sizes, wall thickness, and jacketings.

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