* Llamas Plastic Inc. of Sylmar won...

* Llamas Plastic Inc. of Sylmar won a $539,856 contract from Kelly Air Force Base in Texas for panel assemblies.

* Senior Flexonics Inc. of Burbank won three contracts from the Defense General Supply Center in Richmond, Va., two of $228,659 and $116,830 for duct assemblies, and one of $152,224 for air-conditioning and heating duct assemblies.

* Senior Flexonics Inc.’s Stainless Steel Products Division in Burbank won a $463,500 contract from the Defense General Supply Center in Richmond, Va., for bleed air duct assemblies.

* Litton Systems Inc. of Woodland Hills won a $251,554 contract from the Defense General Supply Center in Richmond, Va., for master control boxes and a $26,146 contract from the Naval Inventory Control Point in Philadelphia for antennas.

* Allied-Signal Government Electronic Systems Inc. of Sylmar won a $239,383 contract from the NCCOSC in San Diego for research and development relating to surveillance acoustic projectors and associated material technologies.

* Sierracin-Sylmar of Sylmar won a $234,130 contract from the Naval Inventory Control Point in Philadelphia for aircraft windshield panels.

* Crane Co. of Burbank won a $232,200 contract from Tinker Air Force Base in Oklahoma for hydraulic spares.

* Flamemaster Corp.’s Chem Seal Division in Sun Valley won a $195,973 contract from the General Services Administration in Auburn, Wash., for sealing compounds.

* Whittaker Controls Inc. of North Hollywood won two contracts from Tinker Air Force Base in Oklahoma, one of $66,033 for valves and one of $54,178 for engine accessories.

* Lustro Plastics Co. of Santa Clarita won a $114,615 contract from the Defense General Supply Center in Richmond, Va., for plastic sheets.

* Whittaker Corp. of North Hollywood won a $77,238 contract from Kelly Air Force Base in Texas for shut-off valves.

* HR Textron Inc. of Valencia won a $37,380 contract from the Army Aviation and Troop Command in St. Louis for linear pistons.