Profile: Aztec Washer Co., Inc. is engaged in washer products. We supply Master Flash®, Master plug®, rubber washers and Master seal®. We offer Master Flash® for standard, retro fits, residential and linears. Our Master Flash® are in custom colors to match roofings. Our Master Seal® washers are elastomeric compounds to meet specifications for elasticity, memory, temperature extremes, chemical, ozone and sunlight-resistance. We are an ISO 9001:2000 registered company.