between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00)

Child Classifications

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• F16J 15/162 CPC only CPC only
• F16J 15/164 CPC only CPC only
• F16J 15/166 CPC only CPC only
• F16J 15/168 CPC only CPC only
• F16J 15/18 with stuffing-boxes for elastic or plastic packings +6 CPC IPC+CPC Available in IPC and CPC
• F16J 15/26 with stuffing-boxes for rigid sealing rings IPC+CPC Available in IPC and CPC
• F16J 15/32 with elastic sealings, e.g. O-rings IPC+CPC Available in IPC and CPC
• F16J 15/34 with slip-ring pressed against a more or less radial face on one member +5 CPC IPC+CPC Available in IPC and CPC
• F16J 15/40 by means of fluid +2 CPC IPC+CPC Available in IPC and CPC