|Description||Tube OD||Part No.||Price||Buy|
|MS28778 Tube Fitting Boss Gasket||1/8|
|MS28778 Tube Fitting Boss Gasket||3/16|
|MS28778 Tube Fitting Boss Gasket||1/4|
|MS28778 Tube Fitting Boss Gasket||5/16|
|MS28778 Tube Fitting Boss Gasket||3/8|
|MS28778 Tube Fitting Boss Gasket||1/2||MS28778-8||$3.35|
|MS28778 Tube Fitting Boss Gasket||5/8||MS28778-10||$1.92|
|MS28778 Tube Fitting Boss Gasket||3/4|
|MS28778 Tube Fitting Boss Gasket||7/8|
|MS28778 Tube Fitting Boss Gasket||1|
|MS28778 Tube Fitting Boss Gasket||1-1/4|
|Straight-thread tube fitting boss gaskets are used to provide a seal between straight-thread fittings, such as AN815, and ports of instruments with female straight threads instead of the more common female tapered pipe threads.|
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MS28778-16 ORING AN6290-16
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Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
It is closer to 1". The 3/4 is in reference to what size AN fitting it is used with. An AN815-12 for example is a 3/4 fitting but measures almost an inch in diameter.