MIL-STD-2193 Ship Hydraulic System ComponentsThis standard provides design, construction, and testing requirements that are common to most components used in ship hydraulic power transmission and control systems. This standard does not establish configuration requirements, pressure, flow, or performance requirements for any specific component.

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MIL-STD-2193C(SH)

TABLE II. Guidance on 0-ring gland design options.

Gland Design

Radial

Static

(External)

SAE-AS5857 1/

Associated

Back-up Rings

SAE-AS5860 or

SAE-AS5861

SAE-AS4716

SAE-AS5781 or

SAE-AS5782

MIL-G-5514

SAE AS8791

Static

(Internal)

SAE-AS4716

SAE-AS5781 or

SAE-AS5782

MIL-G-5514

SAE AS8791

Dynamic

SAE-AS4716

SAE-AS5781 or

SAE-AS5782

MIL-G-5514

SAE AS8791

Face

SAE-ARP1234

Boss

SAE-11926/1

N0TE:

1/ SAE-AS5857 is preferred in low temperature or low seal swell applications compared to SAE-AS4716 for radial static external seal gland design.

5.2.8.2 0-rings. 0-rings shall be in accordance with table III for applications within the temperature range of

28.8 to 260 °C (-20 to 500 °F). 0-rings shall be in accordance with SAE-AMS-R-83485/1 for lower temperature applications [below 28.8 °C (-20 °F)]. Alternate 0-ring requirements documents for existing Navy designs are

acceptable if they provide equivalent material, dimensional, and part numbering requirements.

TABLE III. 0-ring requirements.

0-Rings	Radial	Static	SAE-AS3209 or Dash no. -001 to -475 of SAE-AS3581
		Dynamic
	Axial Compression or Face
	Boss		Dash no. -901 to -932 of SAE-AS3581

5.2.8.3 Elastomeric seals other than 0-rings. Elastomeric seals not classified as 0-rings are acceptable if improved performance over 0-rings is achievable.

5.2.8.4 Back-up rings. Guidance on the selection of back-up rings is shown in table II based on gland design.

5.2.9 Fasteners. Fasteners shall be in accordance with table IV.