EXHIBIT 99.1

NEWS RELEASE

June 23, 2006
Torrance, California

Summa Industries Announces 3rd Quarter Earnings

Summa Industries (NasdaqNM:SUMX) reports net income from continuing operations of $927,000, or $.23 per common share, on sales of $30,407,000 for the three months ended May 31, 2006, versus $883,000, or $.22 per common share, on sales of $28,808,000 for the three months ended May 31, 2005.

	Three months ended May 31					Nine months ended May 31
	2006		2005			2006			2005
Sales	$	30,407,000	$	28,808,000		$	85,657,000		$	80,982,000
Income from continuing operations	$	927,000	$	883,000		$	2,681,000		$	2,435,000
Net (loss) from discontinued operations	—		$	(375,000	)	$	(405,000	)	$	(1,041,000	)
Net income	$	927,000	$	508,000		$	2,276,000		$	1,394,000
Diluted earnings per share:
Continuing operations	$	0.23	$	0.22		$	0.68		$	0.60
Discontinued operations	—		$	(0.09	)	$	(0.10	)	$	(0.26	)
Net income	$	0.23	$	0.13		$	0.58		$	0.34

A conference call to discuss the results will be held at 9:00 a.m., Pacific Time, Friday, June 23, 2006. The call-in number is 877-407-0782 (Toll Free) or 201-689-8567. The conference call will also be simulcast and archived at www.vcall.com/IC/CEPage.asp?ID=105579.

For further information, contact James R. Swartwout, (310) 792-7024; Fax (310) 792-7079;
jim@summaindustries.com or visit www.summaindustries.com.

Summa Industries
CONDENSED CONSOLIDATED BALANCE SHEETS
(unaudited)

	May 31, 2005		August 31, 2005		May 31, 2006
ASSETS
Current assets:
Cash and cash equivalents	$	1,027,000	$	1,233,000	$	1,680,000
Accounts receivable	18,761,000		16,919,000		18,736,000
Inventories	15,638,000		12,665,000		16,029,000
Prepaid expenses and other	3,895,000		3,471,000		3,350,000
Assets held for sale	—		3,641,000		—
Total current assets	39,321,000		37,929,000		39,795,000
Property, plant and equipment, net	32,227,000		29,213,000		24,920,000
Goodwill and other assets, net	10,894,000		10,435,000		10,800,000
Assets held for sale	—		2,458,000		1,961,000
Total assets	$	82,442,000	$	80,035,000	$	77,476,000
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable	$	9,909,000	$	8,731,000	$	9,928,000
Accrued liabilities	5,429,000		5,774,000		7,362,000
Current maturities of long-term debt	4,178,000		3,069,000		2,783,000
Bank line of credit	—		—		12,282,000
Liabilities held for sale	—		1,280,000		—
Total current liabilities	19,516,000		18,854,000		32,355,000
Long-term debt, net of current maturities	29,157,000		27,520,000		9,902,000
Other long-term liabilities	2,448,000		2,441,000		3,128,000
Minority interest in subsidiary	155,000		132,000		91,000
Total stockholders’ equity	31,166,000		31,088,000		32,000,000
Total liabilities and stockholders’ equity	$	82,442,000	$	80,035,000	$	77,476,000

Summa Industries
CONDENSED CONSOLIDATED INCOME STATEMENTS
(unaudited)

	Three months ended May 31					Nine months ended May 31
	2005			2006		2005			2006
Net sales	$	28,808,000		$	30,407,000	$	80,982,000		$	85,657,000
Cost of sales	22,178,000			23,217,000		61,968,000			65,128,000
Gross profit	6,630,000			7,190,000		19,014,000			20,529,000
Selling, general, administrative and other expenses	4,888,000			5,200,000		14,243,000			15,092,000
(Gain) on sale of real estate	—			—		(43,000		)	(205,000		)
Operating income	1,742,000			1,990,000		4,814,000			5,642,000
Interest expense	407,000			534,000		1,124,000			1,506,000
Income from continuing operations before income taxes and minority interest	1,335,000			1,456,000		3,690,000			4,136,000
Provision for income taxes	469,000			533,000		1,305,000			1,496,000
Income from continuing operations before minority interest	866,000			923,000		2,385,000			2,640,000
Minority interest in net loss of subsidiary	17,000			4,000		50,000			41,000
Income from continuing operations	883,000			927,000		2,435,000			2,681,000
(Loss) from discontinued operations, net of tax benefit of $191,000, $—, $532,000 and $208,000	(375,000		)	—		(1,041,000		)	(405,000		)
Net income	$	508,000		$	927,000	$	1,394,000		$	2,276,000
Earnings (loss) per common share:
Basic
Continuing operations	$	0.22		$	0.24	$	0.61		$	0.68
Discontinued operations	($0.09		)	—		($0.26		)	($0.10		)
Net income	$	0.13		$	0.24	$	0.35		$	0.58
Diluted
Continuing operations	$	0.22		$	0.23	$	0.60		$	0.68
Discontinued operations	$	(0.09	)	—		$	(0.26	)	$	(0.10	)
Net income	$	0.13		$	0.23	$	0.34		$	0.58
Weighted average common shares outstanding:
Basic	3,984,000			3,895,000		3,990,000			3,905,000
Diluted	4,038,000			3,963,000		4,060,000			3,950,000