Crystal can relay manufactured by Hi-G, Inc. (Part Number: 2WBC-2718).
These high-reliability, hermetically sealed relays are specifically designed for demanding environments, including military, aerospace, and industrial process control applications.
Manufacturer: HI-G, INC.Part Number: 2WBC-2718
Contact Rating: 2 Amperes (CONT 2A) at 28 VDC resistive load.
Coil Resistance: 5,000 Ohms
Operating Voltage: 28 VDC nominal.
Contact Arrangement: DPDT (Double-Pole Double-Throw), also known as "Two Form C".
This is indicated by the schematic on the casing showing two independent switching circuits.
Construction: Hermetically sealed "Blue Bead" design, which uses a glass-to-metal seal for vacuum-tight environmental protection.