Compression Gland Gaskets and Inserts

Compression Gland Gasket

The Compression Gland Gasket and Insert can be quickly removed by un-screwing the Compression Gland Screw, removing the insert and gasket and replacing them with the desired sized gasket and insert. For a tutorial on this click here.

The Friction Washer is red color and fits between the Compression Gland Screw and the Compression Gland Insert. It simply keeps the metal from rubbing and chafing. If you need a replacement, contact us directly.

Maintenance for the Compression Gland is simple but necessary. Check our Resources page for more information.


1/8 Inch Sealing System

- 1/8 Inch diameter adjustable hole (~3mm).
- 3/4 Inch minimum sample length (~19mm).
- Recommended for Almond, Prune, Conifer needles, and other similar sized petioles.
- Range of compression: 1/8 Inch – Closed
- Additionally works with Pump-Up Large Lid
- Requires 1/4 Inch Compression Gland Base – As shown in far right picture.

  • 1/8 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/8 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/8 inch gasket
  • 1/8 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/8 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/8 inch insert
  • 1/8 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/8 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/8 inch assembly
  • 1/8 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/8 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/8 inch base

1/4 Inch Compression Gland

- 1/4 Inch diameter adjustable hole (~6mm).
- 3/4 Inch minimum sample length (~19mm).
- Recommended for Wine Grape, Walnut, Conifer branches, and other similar sized petioles.
- Range of compression: 1/4 Inch – Closed
- Additionally works with Pump-Up Large Lid
- Requires 1/4 Inch Compression Gland Base – As shown in far right picture

  • 1/4 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/4 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/4 inch gasket
  • 1/4 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/4 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/4 inch insert
  • 1/4 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/4 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/4 inch assembly
  • 1/4 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/4 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/4 inch base

3/8 Inch Compression Gland

- 3/8 Inch diameter adjustable hole (~9mm).
- 3/4 Inch minimum sample length (~19mm).
- Range of compression: 3/8 Inch – 1/4 Inch
- Does NOT work with Pump-Up Large Lid
- Requires 1/2 Inch Compression Gland Base – As shown in far right picture

  • 3/8 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 3/8 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    3/8 inch gasket
  • 3/8 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 3/8 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    3/8 inch insert
  • 3/8 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 3/8 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    3/8 inch assembly
  • 3/8 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 3/8 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    3/8 inch base

1/2 Inch Compression Gland

- 1/2 Inch diameter adjustable hole (~12mm).
- 3/4 Inch minimum sample length (~19mm).
- Range of compression: 1/2 Inch – 3/8 Inch
- Does NOT work with Pump-Up Large Lid
- Requires 1/2 Inch Compression Gland Base – As shown in far right picture

  • 1/2 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/2 inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/2 inch gasket
  • 1/2 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/2 inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/2 inch insert
  • 1/2 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/2 inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/2 inch assembly
  • 1/2 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture 1/2 inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    1/2 inch base

Grass Compression Gland

- Oval shape adjustable hole (1/8 Inch wide X 3/4 Inch long slit).
- 3/4 Inch minimum sample length (~19mm).
- Recommended for bladed grass, corn, or other flat petiole samples
- Range of compression: 1/8 Inch wide to completely closed.
- Additionally works with Pump-Up Grass Lid
- Requires Grass Compression Gland Base – As shown in far right picture

  • Grass inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Grass inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Grass inch gasket
  • Grass inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Grass inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Grass inch insert
  • Grass inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Grass inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Grass inch assembly
  • Grass inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Grass inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Grass inch base

Almond Compression Gland

- 1/8 Inch diameter adjustable hole (~3mm).
- 1/2 Inch minimum sample length (~13mm).
- Recommended for Almond, or other short petiole samples.
- Range of compression: 1/8 Inch – Closed
- Additionally works with Pump-Up Large Lid
- Requires 1/4 Inch Compression Gland Base – As shown in far right picture.

  • Almond inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Almond inch gasket PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Almond inch gasket
  • Almond inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Almond inch insert view 1 PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Almond inch insert
  • Almond inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Almond inch assembly PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Almond inch assembly
  • Almond inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture Almond inch base PMS Instruments Plant Moisture Stress Measurment for farming and agriculture
    Almond inch base