The nitrile rubber is bonded by heat and pressure to the outer ring, which holds it in place. This structure increases resistance to bursting, increasing the pressure rating of the seal.
Nitrile Butadiene Rubber (NBR): Hardness: 60A.
Working Temperature Range: -20°C to 100°C (-4°F to 212°F).
Because the bonded washer itself acts to retain the gasket material, there is no need for the parts to be sealed to be shaped to retain the gasket. This results in simplified machining and greater ease of use as compared to some other seals, such as O-rings.
The self-centering bonded washers are high-pressure seals that are used in the Mechanical, Hydraulic, and Pneumatic pipelines.
Compatible with Raspberry Pi B+/2B/3B/3B+/4B (external HDMI adapter is required for Pi Zero/Zero W/Zerao WH).
Integrates battery charge circuitry, battery life indicator, powered from 18650 lithium batteries (NOT included), plays anywhere anytime.
Onboard speaker and earphone jack, listen to the familiar BGM from the old days, volume and backlight adjustment keys, adjust the device status according to specific game, better experience.